refactor(core): replace hexlify with bytes.hex()

diff --git a/core/SConscript.firmware b/core/SConscript.firmware
index f87288cb..13b7758c 100644
--- a/core/SConscript.firmware
+++ b/core/SConscript.firmware
@@ -323,7 +323,6 @@ SOURCE_MOD += [
 ]
 
 SOURCE_MICROPYTHON = [
-    'vendor/micropython/extmod/modubinascii.c',
     'vendor/micropython/extmod/moductypes.c',
     'vendor/micropython/extmod/moduheapq.c',
     'vendor/micropython/extmod/modutimeq.c',
diff --git a/core/SConscript.unix b/core/SConscript.unix
index ac5ce199..64ebdc56 100644
--- a/core/SConscript.unix
+++ b/core/SConscript.unix
@@ -305,7 +305,6 @@ SOURCE_MOD += [
 ]
 
 SOURCE_MICROPYTHON = [
-    'vendor/micropython/extmod/modubinascii.c',
     'vendor/micropython/extmod/moductypes.c',
     'vendor/micropython/extmod/moduheapq.c',
     'vendor/micropython/extmod/moduos.c',
diff --git a/core/embed/projects/firmware/mpconfigport.h b/core/embed/projects/firmware/mpconfigport.h
index 5928bc3b..f5e6d4c3 100644
--- a/core/embed/projects/firmware/mpconfigport.h
+++ b/core/embed/projects/firmware/mpconfigport.h
@@ -92,6 +92,7 @@
 #define MICROPY_PY_FUNCTION_ATTRS   (1)
 #define MICROPY_PY_DESCRIPTORS      (0)
 #define MICROPY_PY_DELATTR_SETATTR  (0)
+#define MICROPY_PY_BUILTINS_BYTES_HEX (1)
 #define MICROPY_PY_BUILTINS_STR_UNICODE (1)
 #define MICROPY_PY_BUILTINS_STR_CENTER (0)
 #define MICROPY_PY_BUILTINS_STR_PARTITION (1)
@@ -146,7 +147,7 @@
 #define MICROPY_PY_UHASHLIB_MD5     (0)
 #define MICROPY_PY_UHASHLIB_SHA1    (0)
 #define MICROPY_PY_UCRYPTOLIB       (0)
-#define MICROPY_PY_UBINASCII        (1)
+#define MICROPY_PY_UBINASCII        (0)
 #define MICROPY_PY_UBINASCII_CRC32  (0)
 #define MICROPY_PY_URANDOM          (0)
 #define MICROPY_PY_URANDOM_EXTRA_FUNCS (0)
diff --git a/core/embed/projects/unix/mpconfigport.h b/core/embed/projects/unix/mpconfigport.h
index 18e5e9bd..7ac33e30 100644
--- a/core/embed/projects/unix/mpconfigport.h
+++ b/core/embed/projects/unix/mpconfigport.h
@@ -101,6 +101,7 @@
 #define MICROPY_PY_FUNCTION_ATTRS   (1)
 #define MICROPY_PY_DESCRIPTORS      (0)
 #define MICROPY_PY_DELATTR_SETATTR  (0)
+#define MICROPY_PY_BUILTINS_BYTES_HEX (1)
 #define MICROPY_PY_BUILTINS_STR_UNICODE (1)
 #define MICROPY_PY_BUILTINS_STR_CENTER (0)
 #define MICROPY_PY_BUILTINS_STR_PARTITION (1)
@@ -161,7 +162,7 @@
 #define MICROPY_PY_UHASHLIB_MD5     (0)
 #define MICROPY_PY_UHASHLIB_SHA1    (0)
 #define MICROPY_PY_UCRYPTOLIB       (0)
-#define MICROPY_PY_UBINASCII        (1)
+#define MICROPY_PY_UBINASCII        (0)
 #define MICROPY_PY_UBINASCII_CRC32  (0)
 #define MICROPY_PY_URANDOM          (0)
 #define MICROPY_PY_URANDOM_EXTRA_FUNCS (0)
diff --git a/core/embed/upymod/build.rs b/core/embed/upymod/build.rs
index 3b231c3c..bbbafee7 100644
--- a/core/embed/upymod/build.rs
+++ b/core/embed/upymod/build.rs
@@ -129,7 +129,6 @@ fn main() -> Result<()> {
         lib.add_sources_in_dir(
             mpy_dir,
             [
-                "extmod/modubinascii.c",
                 "extmod/moduheapq.c",
                 "extmod/modutimeq.c",
                 "extmod/utime_mphal.c",
diff --git a/core/mocks/generated/ubinascii.pyi b/core/mocks/generated/ubinascii.pyi
deleted file mode 120000
index b129e0ce..00000000
--- a/core/mocks/generated/ubinascii.pyi
+++ /dev/null
@@ -1 +0,0 @@
-../ubinascii.pyi
\ No newline at end of file
diff --git a/core/mocks/ubinascii.pyi b/core/mocks/ubinascii.pyi
deleted file mode 100644
index 969d21dd..00000000
--- a/core/mocks/ubinascii.pyi
+++ /dev/null
@@ -1,7 +0,0 @@
-from buffer_types import AnyBytes, StrOrBytes
-
-def hexlify(data: AnyBytes, sep: AnyBytes = ...) -> bytes: ...
-def unhexlify(data: StrOrBytes) -> bytes: ...
-def a2b_base64(data: AnyBytes) -> bytes: ...
-def b2a_base64(data: AnyBytes) -> bytes: ...
-def crc32(data: AnyBytes, crc: int = ...) -> int: ...
diff --git a/core/src/apps/bitcoin/sign_tx/layout.py b/core/src/apps/bitcoin/sign_tx/layout.py
index a4640709..2f2b0ebc 100644
--- a/core/src/apps/bitcoin/sign_tx/layout.py
+++ b/core/src/apps/bitcoin/sign_tx/layout.py
@@ -226,11 +226,9 @@ async def show_payment_request_details(
 
 
 async def confirm_replacement(title: str, txid: AnyBytes) -> None:
-    from ubinascii import hexlify
-
     await layouts.confirm_replacement(
         title,
-        hexlify(txid).decode(),
+        txid.hex(),
     )
 
 
diff --git a/core/src/apps/cardano/get_public_key.py b/core/src/apps/cardano/get_public_key.py
index 1a4bb850..f0726db8 100644
--- a/core/src/apps/cardano/get_public_key.py
+++ b/core/src/apps/cardano/get_public_key.py
@@ -1,5 +1,4 @@
 from typing import TYPE_CHECKING
-from ubinascii import hexlify
 
 from trezor import TR
 
@@ -55,8 +54,8 @@ def _get_public_key(
 
     node = keychain.derive(derivation_path)
 
-    public_key = hexlify(derive_public_key(keychain, derivation_path)).decode()
-    chain_code = hexlify(node.chain_code()).decode()
+    public_key = derive_public_key(keychain, derivation_path).hex()
+    chain_code = node.chain_code().hex()
     xpub_key = public_key + chain_code
 
     node_type = HDNodeType(
diff --git a/core/src/apps/common/signverify.py b/core/src/apps/common/signverify.py
index 2511aba6..22874549 100644
--- a/core/src/apps/common/signverify.py
+++ b/core/src/apps/common/signverify.py
@@ -29,12 +29,10 @@ def message_digest(coin: CoinInfo, message: AnyBytes) -> bytes:
 
 
 def decode_message(message: AnyBytes) -> str:
-    from ubinascii import hexlify
-
     try:
         return bytes(message).decode()
     except UnicodeError:
-        return f"hex({hexlify(message).decode()})"
+        return f"hex({message.hex()})"
 
 
 def is_printable_ascii(bytestring: AnyBytes) -> bool:
diff --git a/core/src/apps/ethereum/clear_signing.py b/core/src/apps/ethereum/clear_signing.py
index c57d718f..ca100e73 100644
--- a/core/src/apps/ethereum/clear_signing.py
+++ b/core/src/apps/ethereum/clear_signing.py
@@ -465,9 +465,7 @@ class RawFormatter(FieldFormatter):
         elif isinstance(value, str):
             return value, None, None
         elif isinstance(value, (bytes, bytearray)):
-            from ubinascii import hexlify
-
-            return hexlify(value).decode(), None, None
+            return value.hex(), None, None
         elif isinstance(value, bool):
             return str(value), None, None
         elif isinstance(value, int):
@@ -1251,8 +1249,6 @@ async def _expand_one_subcall(
 
     def raw_rows() -> list[DisplayedField]:
         """No subparsing. Show the callee and the raw hex blob."""
-        from ubinascii import hexlify
-
         to_label = TR.ethereum__subcall_to
         blob_label = field_definition.label
         if index is not None:
@@ -1260,7 +1256,7 @@ async def _expand_one_subcall(
             blob_label = f"({subcall}) {blob_label}"
         return [
             ((to_label, callee_str(), None), None, None),
-            ((blob_label, hexlify(blob).decode(), None), None, None),
+            ((blob_label, blob.hex(), None), None, None),
         ]
 
     if nested:
diff --git a/core/src/apps/ethereum/get_public_key.py b/core/src/apps/ethereum/get_public_key.py
index c39061d3..ea081d4f 100644
--- a/core/src/apps/ethereum/get_public_key.py
+++ b/core/src/apps/ethereum/get_public_key.py
@@ -5,8 +5,6 @@ if TYPE_CHECKING:
 
 
 async def get_public_key(msg: EthereumGetPublicKey) -> EthereumPublicKey:
-    from ubinascii import hexlify
-
     from trezor.messages import EthereumPublicKey, GetPublicKey
     from trezor.ui.layouts import show_pubkey
 
@@ -17,6 +15,6 @@ async def get_public_key(msg: EthereumGetPublicKey) -> EthereumPublicKey:
     resp = await bitcoin_get_public_key.get_public_key(btc_pubkey_msg)
 
     if msg.show_display:
-        await show_pubkey(hexlify(resp.node.public_key).decode())
+        await show_pubkey(resp.node.public_key.hex())
 
     return EthereumPublicKey(node=resp.node, xpub=resp.xpub)
diff --git a/core/src/apps/ethereum/helpers.py b/core/src/apps/ethereum/helpers.py
index 5ce2c271..b36f16ee 100644
--- a/core/src/apps/ethereum/helpers.py
+++ b/core/src/apps/ethereum/helpers.py
@@ -1,5 +1,4 @@
 from typing import TYPE_CHECKING
-from ubinascii import hexlify
 
 from trezor import TR
 
@@ -36,7 +35,7 @@ def address_from_bytes(
     else:
         prefix = ""
 
-    address_hex = hexlify(address_bytes)
+    address_hex = address_bytes.hex().encode()
     writer = keccak256(prefix.encode())
     writer.extend(address_hex)
     digest = writer.get_digest()
@@ -60,17 +59,15 @@ def address_from_bytes(
 
 
 def bytes_from_address(address: str) -> bytes:
-    from ubinascii import unhexlify
-
     from trezor import wire
 
     if len(address) == 40:
-        return unhexlify(address)
+        return bytes.fromhex(address)
 
     elif len(address) == 42:
         if address[0:2] not in ("0x", "0X"):
             raise wire.ProcessError("Ethereum: invalid beginning of an address")
-        return unhexlify(address[2:])
+        return bytes.fromhex(address[2:])
 
     elif len(address) == 0:
         return bytes()
@@ -121,7 +118,7 @@ def get_type_name(field: EthereumFieldType) -> str:
 def decode_typed_data(data: AnyBytes, type_name: str) -> str:
     """Used by sign_typed_data module to show data to user."""
     if type_name.startswith("bytes"):
-        return hexlify(data).decode()
+        return data.hex()
     elif type_name == "string":
         return bytes(data).decode()
     elif type_name == "address":
diff --git a/core/src/apps/ethereum/layout.py b/core/src/apps/ethereum/layout.py
index 38fe10ba..ba32de4a 100644
--- a/core/src/apps/ethereum/layout.py
+++ b/core/src/apps/ethereum/layout.py
@@ -1,5 +1,4 @@
 from typing import TYPE_CHECKING
-from ubinascii import hexlify
 
 from trezor import TR
 from trezor.enums import ButtonRequestType
@@ -290,7 +289,7 @@ async def require_confirm_vault_tx(
     account, account_path = get_account_and_path(address_n)
 
     extra_data_str: str | None = (
-        "0x" + hexlify(extra_data).decode() if extra_data is not None else None
+        "0x" + extra_data.hex() if extra_data is not None else None
     )
 
     await confirm_ethereum_vault_tx(
@@ -402,11 +401,9 @@ def require_confirm_address(
     br_name: str | None = None,
     footer: str | None = None,
 ) -> Awaitable[None]:
-    from ubinascii import hexlify
-
     from trezor.ui.layouts import confirm_address
 
-    address_hex = "0x" + hexlify(address_bytes).decode()
+    address_hex = "0x" + address_bytes.hex()
     return confirm_address(
         title or TR.ethereum__title_signing_address,
         address_hex,
@@ -419,11 +416,9 @@ def require_confirm_address(
 
 
 async def confirm_message_hash(message_hash: bytes) -> None:
-    from ubinascii import hexlify
-
     from trezor.ui.layouts import confirm_value
 
-    message_hash_hex = "0x" + hexlify(message_hash).decode()
+    message_hash_hex = "0x" + message_hash.hex()
 
     await confirm_value(
         TR.ethereum__title_confirm_message_hash,
diff --git a/core/src/apps/ethereum/sc_constants.py.mako b/core/src/apps/ethereum/sc_constants.py.mako
index 75839b19..17f1f013 100644
--- a/core/src/apps/ethereum/sc_constants.py.mako
+++ b/core/src/apps/ethereum/sc_constants.py.mako
@@ -5,10 +5,8 @@
 
 from typing import Iterator
 <%
-from binascii import unhexlify
-
 def fmt_addr(addr_hex: str) -> str:
-    data = "".join(f'\\x{b:02x}' for b in unhexlify(addr_hex))
+    data = "".join(f'\\x{b:02x}' for b in bytes.fromhex(addr_hex))
     return f'b"{data}"'
 
 
diff --git a/core/src/apps/ethereum/staking.py b/core/src/apps/ethereum/staking.py
index e02a1681..94218296 100644
--- a/core/src/apps/ethereum/staking.py
+++ b/core/src/apps/ethereum/staking.py
@@ -1,5 +1,4 @@
 from typing import TYPE_CHECKING
-from ubinascii import unhexlify
 
 from trezor.utils import BufferReader
 from trezor.wire import DataError
@@ -13,18 +12,18 @@ if TYPE_CHECKING:
     from .keychain import MsgInSignTx
 
 
-FUNC_SIG_STAKE = unhexlify("3a29dbae")
-FUNC_SIG_UNSTAKE = unhexlify("76ec871c")
-FUNC_SIG_CLAIM = unhexlify("33986ffa")
+FUNC_SIG_STAKE = b"\x3a\x29\xdb\xae"
+FUNC_SIG_UNSTAKE = b"\x76\xec\x87\x1c"
+FUNC_SIG_CLAIM = b"\x33\x98\x6f\xfa"
 
 # addresses for pool (stake/unstake) and accounting (claim) operations
 ADDRESSES_POOL = (
-    unhexlify("AFA848357154a6a624686b348303EF9a13F63264"),  # Hoodi testnet
-    unhexlify("D523794C879D9eC028960a231F866758e405bE34"),  # mainnet
+    b"\xaf\xa8\x48\x35\x71\x54\xa6\xa6\x24\x68\x6b\x34\x83\x03\xef\x9a\x13\xf6\x32\x64",  # Hoodi testnet
+    b"\xd5\x23\x79\x4c\x87\x9d\x9e\xc0\x28\x96\x0a\x23\x1f\x86\x67\x58\xe4\x05\xbe\x34",  # mainnet
 )
 ADDRESSES_ACCOUNTING = (
-    unhexlify("624087DD1904ab122A32878Ce9e933C7071F53B9"),  # Hoodi testnet
-    unhexlify("7a7f0b3c23C23a31cFcb0c44709be70d4D545c6e"),  # mainnet
+    b"\x62\x40\x87\xdd\x19\x04\xab\x12\x2a\x32\x87\x8c\xe9\xe9\x33\xc7\x07\x1f\x53\xb9",  # Hoodi testnet
+    b"\x7a\x7f\x0b\x3c\x23\xc2\x3a\x31\xcf\xcb\x0c\x44\x70\x9b\xe7\x0d\x4d\x54\x5c\x6e",  # mainnet
 )
 
 
diff --git a/core/src/apps/management/reboot_to_bootloader.py b/core/src/apps/management/reboot_to_bootloader.py
index e712594d..f62ced50 100644
--- a/core/src/apps/management/reboot_to_bootloader.py
+++ b/core/src/apps/management/reboot_to_bootloader.py
@@ -13,8 +13,6 @@ _REBOOT_SUCCESS_TIMEOUT_MS = const(500)
 
 
 async def install_upgrade(firmware_header: AnyBytes) -> AnyBytes:
-    from ubinascii import hexlify
-
     from trezor import TR, utils, wire
     from trezor.ui.layouts import confirm_firmware_update
 
@@ -38,7 +36,7 @@ async def install_upgrade(firmware_header: AnyBytes) -> AnyBytes:
         description=TR.reboot_to_bootloader__version_by_template.format(
             version_str, hdr.vendor
         ),
-        fingerprint=hexlify(hdr.fingerprint).decode(),
+        fingerprint=hdr.fingerprint.hex(),
     )
 
     return hdr.hash
diff --git a/core/src/apps/nostr/sign_event.py b/core/src/apps/nostr/sign_event.py
index d061a4de..41141d82 100644
--- a/core/src/apps/nostr/sign_event.py
+++ b/core/src/apps/nostr/sign_event.py
@@ -10,8 +10,6 @@ if TYPE_CHECKING:
 
 @auto_keychain(__name__)
 async def sign_event(msg: NostrSignEvent, keychain: Keychain) -> NostrEventSignature:
-    from ubinascii import hexlify
-
     from trezor import TR
     from trezor.crypto.curve import bip340
     from trezor.crypto.hashlib import sha256
@@ -46,7 +44,9 @@ async def sign_event(msg: NostrSignEvent, keychain: Keychain) -> NostrEventSigna
     ]
     await confirm_value(title, content, "", "nostr_sign_event", info_items=info_items)
 
-    serialized_event = f'[0,"{hexlify(pk).decode()}",{created_at},{kind},[{serialized_tags}],"{content}"]'
+    serialized_event = (
+        f'[0,"{pk.hex()}",{created_at},{kind},[{serialized_tags}],"{content}"]'
+    )
     event_id = sha256(serialized_event).digest()
 
     # The event signature is basically the signature of the event ID computed above
diff --git a/core/src/apps/stellar/layout.py b/core/src/apps/stellar/layout.py
index b4affe8a..b45bbd04 100644
--- a/core/src/apps/stellar/layout.py
+++ b/core/src/apps/stellar/layout.py
@@ -1,5 +1,4 @@
 from typing import TYPE_CHECKING
-from ubinascii import hexlify
 
 import trezor.ui.layouts as layouts
 from trezor import TR, strings, wire
@@ -394,7 +393,7 @@ def _format_sc_val(val: StellarSCVal) -> str:
     elif t == StellarSCValType.SCV_BYTES:
         if val.bytes is None:
             raise DataError("Stellar: missing bytes value")
-        return "0x" + hexlify(val.bytes).decode()
+        return "0x" + val.bytes.hex()
     elif t == StellarSCValType.SCV_STRING:
         if val.string is None:
             raise DataError("Stellar: missing string value")
@@ -404,7 +403,7 @@ def _format_sc_val(val: StellarSCVal) -> str:
         try:
             return f'"{_escape_str(bytes(val.string).decode())}"'
         except UnicodeError:
-            return "0x" + hexlify(val.string).decode()
+            return "0x" + val.string.hex()
     elif t == StellarSCValType.SCV_SYMBOL:
         if val.symbol is None:
             raise DataError("Stellar: missing symbol value")
diff --git a/core/src/apps/stellar/operations/layout.py b/core/src/apps/stellar/operations/layout.py
index 96b48533..e6fd66aa 100644
--- a/core/src/apps/stellar/operations/layout.py
+++ b/core/src/apps/stellar/operations/layout.py
@@ -1,5 +1,4 @@
 from typing import TYPE_CHECKING
-from ubinascii import hexlify
 
 from trezor import TR
 from trezor.ui.layouts import (
@@ -381,7 +380,7 @@ async def confirm_set_options_op(op: StellarSetOptionsOp) -> None:
 async def confirm_claim_claimable_balance_op(
     op: StellarClaimClaimableBalanceOp,
 ) -> None:
-    balance_id = hexlify(op.balance_id).decode()
+    balance_id = op.balance_id.hex()
     await confirm_properties(
         "op_claim_claimable_balance",
         TR.stellar__claim_claimable_balance,
diff --git a/core/src/apps/stellar/sign_tx.py b/core/src/apps/stellar/sign_tx.py
index f694d7f0..ef24d406 100644
--- a/core/src/apps/stellar/sign_tx.py
+++ b/core/src/apps/stellar/sign_tx.py
@@ -14,8 +14,6 @@ if TYPE_CHECKING:
     *[PATTERN], slip44_id=SLIP44_ID, curve=CURVE, slip21_namespaces=[[b"SLIP-0024"]]
 )
 async def sign_tx(msg: StellarSignTx, keychain: Slip21Keychain) -> StellarSignedTx:
-    from ubinascii import hexlify
-
     from trezor import TR
     from trezor.crypto.curve import ed25519
     from trezor.crypto.hashlib import sha256
@@ -105,7 +103,7 @@ async def sign_tx(msg: StellarSignTx, keychain: Slip21Keychain) -> StellarSigned
         if msg.memo_hash is None:
             raise DataError("Stellar: Missing memo hash")
         writers.write_bytes_fixed(w, bytearray(msg.memo_hash), 32)
-        memo_confirm_text = hexlify(msg.memo_hash).decode()
+        memo_confirm_text = msg.memo_hash.hex()
     else:
         raise ProcessError("Stellar invalid memo type")
 
diff --git a/core/src/apps/tron/sc_constants.py b/core/src/apps/tron/sc_constants.py
index dd8d0205..964095ee 100644
--- a/core/src/apps/tron/sc_constants.py
+++ b/core/src/apps/tron/sc_constants.py
@@ -1,5 +1,4 @@
 from micropython import const
-from ubinascii import unhexlify
 
 # smart contract 'data' field lengths in bytes
 SC_FUNC_SIG_BYTES = const(4)
@@ -10,5 +9,5 @@ assert SC_ARGUMENT_ADDRESS_BYTES <= SC_ARGUMENT_BYTES
 
 # Known TRC-20/ERC-20 functions
 
-SC_FUNC_SIG_TRANSFER = unhexlify("a9059cbb")
-SC_FUNC_SIG_APPROVE = unhexlify("095ea7b3")
+SC_FUNC_SIG_TRANSFER = b"\xa9\x05\x9c\xbb"
+SC_FUNC_SIG_APPROVE = b"\x09\x5e\xa7\xb3"
diff --git a/core/src/apps/webauthn/credential.py b/core/src/apps/webauthn/credential.py
index 355ce7ed..0193344d 100644
--- a/core/src/apps/webauthn/credential.py
+++ b/core/src/apps/webauthn/credential.py
@@ -1,7 +1,6 @@
 import ustruct
 from micropython import const
 from typing import TYPE_CHECKING
-from ubinascii import hexlify
 
 import storage.device as storage_device
 from trezor import utils
@@ -301,7 +300,7 @@ class Fido2Credential(Credential):
         elif self.user_display_name:
             return self.user_display_name
         elif self.user_id:
-            return hexlify(self.user_id).decode()
+            return self.user_id.hex()
         else:
             return None
 
@@ -439,8 +438,8 @@ class U2fCredential(Credential):
         if app is not None:
             return app.label
 
-        start = hexlify(self.rp_id_hash[:4]).decode()
-        end = hexlify(self.rp_id_hash[-4:]).decode()
+        start = self.rp_id_hash[:4].hex()
+        end = self.rp_id_hash[-4:].hex()
         return f"{start}...{end}"
 
     @staticmethod
diff --git a/core/src/storage/device.py b/core/src/storage/device.py
index 343de482..29125fb3 100644
--- a/core/src/storage/device.py
+++ b/core/src/storage/device.py
@@ -103,12 +103,11 @@ def is_initialized() -> bool:
 
 def get_device_id() -> str:
     from trezorcrypto import random  # avoid pulling in trezor.crypto
-    from ubinascii import hexlify
 
     dev_id = common.get(_NAMESPACE, DEVICE_ID, public=True)
     if not dev_id:
         # _new_device_id
-        new_dev_id_str = hexlify(random.bytes(12)).decode().upper()
+        new_dev_id_str = random.bytes(12).hex().upper()
         dev_id = new_dev_id_str.encode()
         common.set(_NAMESPACE, DEVICE_ID, dev_id, public=True)
     return dev_id.decode()
diff --git a/core/src/trezor/crypto/base32.py b/core/src/trezor/crypto/base32.py
index 49360665..575a195b 100644
--- a/core/src/trezor/crypto/base32.py
+++ b/core/src/trezor/crypto/base32.py
@@ -58,8 +58,6 @@ def encode(s: AnyBytes) -> str:
 
 
 def decode(s: str) -> bytes:
-    from ubinascii import unhexlify
-
     data = s.encode()
     _, leftover = divmod(len(data), 8)
     if leftover:
@@ -85,11 +83,11 @@ def decode(s: str) -> bytes:
         acc += _b32rev[c] << shift
         shift -= 5
         if shift < 0:
-            parts.append(unhexlify((f"{acc:010x}").encode()))
+            parts.append(bytes.fromhex(f"{acc:010x}"))
             acc = 0
             shift = 35
     # Process the last, partial quanta
-    last = unhexlify(bytes(f"{acc:010x}", "ascii"))
+    last = bytes.fromhex(f"{acc:010x}")
     if padchars == 0:
         last = b""  # No characters
     elif padchars == 1:
diff --git a/core/src/trezor/utils.py b/core/src/trezor/utils.py
index 0e49c436..3add64b3 100644
--- a/core/src/trezor/utils.py
+++ b/core/src/trezor/utils.py
@@ -236,14 +236,10 @@ if False:  # noqa
             self.data = ""
 
         def update(self, data: bytes) -> None:
-            from ubinascii import hexlify
-
             self.ctx.update(data)
-            self.data += hexlify(data).decode() + " "
+            self.data += data.hex() + " "
 
         def digest(self) -> bytes:
-            from ubinascii import hexlify
-
             from trezor import log
 
             digest = self.ctx.digest()
@@ -251,7 +247,7 @@ if False:  # noqa
                 __name__,
                 "%s hash: %s, data: %s",
                 self.ctx.__class__.__name__,
-                hexlify(digest).decode(),
+                digest.hex(),
                 self.data,
             )
             return digest
@@ -410,9 +406,7 @@ def hexlify_if_bytes(data: str | bytes | bytearray | memoryview) -> str:
     if isinstance(data, str):
         return data
     elif isinstance(data, (bytes, bytearray, memoryview)):
-        from ubinascii import hexlify
-
-        return hexlify(data).decode()
+        return data.hex()
     else:
         raise TypeError("Expected str, bytes, bytearray, or memoryview")
 
diff --git a/core/src/trezor/wire/thp/pairing_context.py b/core/src/trezor/wire/thp/pairing_context.py
index 38ccd449..bd0c5eea 100644
--- a/core/src/trezor/wire/thp/pairing_context.py
+++ b/core/src/trezor/wire/thp/pairing_context.py
@@ -1,5 +1,4 @@
 from typing import TYPE_CHECKING
-from ubinascii import hexlify
 
 from trezor import loop, protobuf, workflow
 from trezor.wire import context, message_handler, protocol_common
@@ -167,7 +166,7 @@ class PairingContext(Context):
 
     def _get_code_qr_code_str(self) -> str:
         if self.code_qr_code is not None:
-            code_str = (hexlify(self.code_qr_code)).decode("utf-8")
+            code_str = self.code_qr_code.hex()
             if __debug__:
                 log.debug(
                     __name__, "code_qr_code_hexlified: %s", code_str, iface=self.iface
diff --git a/core/tests/common.py b/core/tests/common.py
index cbb67e85..f9c8ad39 100644
--- a/core/tests/common.py
+++ b/core/tests/common.py
@@ -1,6 +1,5 @@
 import unittest  # noqa: F401
 from typing import Any, Awaitable
-from ubinascii import hexlify, unhexlify  # noqa: F401
 
 from trezor import utils  # noqa: F401
 from trezor.wire import context
diff --git a/core/tests/ethereum_common.py b/core/tests/ethereum_common.py
index 407e0baa..7101d17d 100644
--- a/core/tests/ethereum_common.py
+++ b/core/tests/ethereum_common.py
@@ -1,5 +1,3 @@
-from ubinascii import unhexlify  # noqa: F401
-
 from trezor import messages, protobuf
 from trezor.crypto import cosi
 from trezor.crypto.curve import ed25519
diff --git a/core/tests/test_apps.bitcoin.address.py b/core/tests/test_apps.bitcoin.address.py
index a6ebbe41..70791905 100644
--- a/core/tests/test_apps.bitcoin.address.py
+++ b/core/tests/test_apps.bitcoin.address.py
@@ -31,7 +31,7 @@ class TestAddress(unittest.TestCase):
     def test_p2wpkh_in_p2sh_address(self):
         coin = coins.by_name("Testnet")
         address = address_p2wpkh_in_p2sh(
-            unhexlify(
+            bytes.fromhex(
                 "03a1af804ac108a8a51782198c2d034b28bf90c8803f5a53f76276fa69a4eae77f"
             ),
             coin,
@@ -62,7 +62,7 @@ class TestAddress(unittest.TestCase):
         # test data from https://bc-2.jp/tools/bech32demo/index.html
         coin = coins.by_name("Testnet")
         address = address_p2wpkh(
-            unhexlify(
+            bytes.fromhex(
                 "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798"
             ),
             coin,
@@ -73,7 +73,7 @@ class TestAddress(unittest.TestCase):
         coin = coins.by_name("Testnet")
 
         address = address_p2sh(
-            unhexlify("7a55d61848e77ca266e79a39bfc85c580a6426c9"), coin
+            bytes.fromhex("7a55d61848e77ca266e79a39bfc85c580a6426c9"), coin
         )
         self.assertEqual(address, "2N4Q5FhU2497BryFfUgbqkAJE87aKHUhXMp")
 
@@ -81,7 +81,7 @@ class TestAddress(unittest.TestCase):
         coin = coins.by_name("Testnet")
 
         # pubkey OP_CHECKSIG
-        script = unhexlify(
+        script = bytes.fromhex(
             "210279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798ac"
         )
         h = HashWriter(sha256())
@@ -97,7 +97,7 @@ class TestAddress(unittest.TestCase):
 
         # test data from Mastering Bitcoin
         address = _address_p2wsh_in_p2sh(
-            unhexlify(
+            bytes.fromhex(
                 "9592d601848d04b172905e0ddb0adde59f1590f1e553ffc81ddc4b0ed927dd73"
             ),
             coin,
@@ -110,19 +110,19 @@ class TestAddress(unittest.TestCase):
         # # commented out because uncompressed public keys are not supported
         # coin = coins.by_name('Bitcoin')
         # pubkeys = [
-        #     unhexlify('04a882d414e478039cd5b52a92ffb13dd5e6bd4515497439dffd691a0f12af9575fa349b5694ed3155b136f09e63975a1700c9f4d4df849323dac06cf3bd6458cd'),
-        #     unhexlify('046ce31db9bdd543e72fe3039a1f1c047dab87037c36a669ff90e28da1848f640de68c2fe913d363a51154a0c62d7adea1b822d05035077418267b1a1379790187'),
-        #     unhexlify('0411ffd36c70776538d079fbae117dc38effafb33304af83ce4894589747aee1ef992f63280567f52f5ba870678b4ab4ff6c8ea600bd217870a8b4f1f09f3a8e83'),
+        #     bytes.fromhex('04a882d414e478039cd5b52a92ffb13dd5e6bd4515497439dffd691a0f12af9575fa349b5694ed3155b136f09e63975a1700c9f4d4df849323dac06cf3bd6458cd'),
+        #     bytes.fromhex('046ce31db9bdd543e72fe3039a1f1c047dab87037c36a669ff90e28da1848f640de68c2fe913d363a51154a0c62d7adea1b822d05035077418267b1a1379790187'),
+        #     bytes.fromhex('0411ffd36c70776538d079fbae117dc38effafb33304af83ce4894589747aee1ef992f63280567f52f5ba870678b4ab4ff6c8ea600bd217870a8b4f1f09f3a8e83'),
         # ]
         # address = _address_multisig_p2sh(pubkeys, 2, coin.address_type_p2sh)
         # self.assertEqual(address, '347N1Thc213QqfYCz3PZkjoJpNv5b14kBd')
 
         coin = coins.by_name("Bitcoin")
         pubkeys = [
-            unhexlify(
+            bytes.fromhex(
                 "02fe6f0a5a297eb38c391581c4413e084773ea23954d93f7753db7dc0adc188b2f"
             ),
-            unhexlify(
+            bytes.fromhex(
                 "02ff12471208c14bd580709cb2358d98975247d8765f92bc25eab3b2763ed605f8"
             ),
         ]
@@ -138,10 +138,10 @@ class TestAddress(unittest.TestCase):
         # https://bitcoin.stackexchange.com/questions/62656/generate-a-p2sh-p2wsh-address-and-spend-output-sent-to-it
         coin = coins.by_name("Testnet")
         pubkeys = [
-            unhexlify(
+            bytes.fromhex(
                 "020b020e27e49f049eac10010506499a84e1d59a500cd3680e9ded580df9a107b0"
             ),
-            unhexlify(
+            bytes.fromhex(
                 "0320ce424c6d61f352ccfea60d209651672cfb03b2dc77d1d64d3ba519aec756ae"
             ),
         ]
@@ -343,7 +343,7 @@ class TestAddress(unittest.TestCase):
 
         for coin_name, address_n, address, mac in VECTORS:
             coin = coins.by_name(coin_name)
-            mac = unhexlify(mac)
+            mac = bytes.fromhex(mac)
             keychain = Keychain(
                 seed,
                 coin.curve_name,
diff --git a/core/tests/test_apps.bitcoin.address_grs.py b/core/tests/test_apps.bitcoin.address_grs.py
index 724e8f95..431963a2 100644
--- a/core/tests/test_apps.bitcoin.address_grs.py
+++ b/core/tests/test_apps.bitcoin.address_grs.py
@@ -74,7 +74,7 @@ class TestAddressGRS(unittest.TestCase):
         coin = coins.by_name("Groestlcoin Testnet")
 
         address = address_p2sh(
-            unhexlify("7a55d61848e77ca266e79a39bfc85c580a6426c9"), coin
+            bytes.fromhex("7a55d61848e77ca266e79a39bfc85c580a6426c9"), coin
         )
         self.assertEqual(address, "2N4Q5FhU2497BryFfUgbqkAJE87aKDv3V3e")
 
diff --git a/core/tests/test_apps.bitcoin.change_detector.py b/core/tests/test_apps.bitcoin.change_detector.py
index 46193dbb..4e22d1c5 100644
--- a/core/tests/test_apps.bitcoin.change_detector.py
+++ b/core/tests/test_apps.bitcoin.change_detector.py
@@ -12,10 +12,10 @@ xpub1 = HDNodeType(
     depth=2,
     fingerprint=50263508,
     child_num=0,
-    chain_code=unhexlify(
+    chain_code=bytes.fromhex(
         "8eb1f96a45dcb693dbad61f5184871d999127a37f1b0d4dae9964eaf3fb0e15b"
     ),
-    public_key=unhexlify(
+    public_key=bytes.fromhex(
         "03922315cd2d2d874e4c55add2e0ea41af9c2957f02c0abe0f55285d364a067b61"
     ),
 )
@@ -25,10 +25,10 @@ xpub2 = HDNodeType(
     depth=2,
     fingerprint=50263508,
     child_num=1,
-    chain_code=unhexlify(
+    chain_code=bytes.fromhex(
         "acad50a7e52e44841d42bec6886df516974f8d366bc471a8515dfc69a6692700"
     ),
-    public_key=unhexlify(
+    public_key=bytes.fromhex(
         "02e6f3bf3093b45705e3d838490377e0d99eed911ca01990d1e94acd445dee59e8"
     ),
 )
@@ -38,10 +38,10 @@ xpub3 = HDNodeType(
     depth=2,
     fingerprint=50263508,
     child_num=2,
-    chain_code=unhexlify(
+    chain_code=bytes.fromhex(
         "5204b124a264b0bbf86360e365f0c9a0cb6e3ea57dda97196af015d64ccfa6b1"
     ),
-    public_key=unhexlify(
+    public_key=bytes.fromhex(
         "021cd5d138ba442c7f8ee9a2b8f4e254dc599a57d42c69b7194074135a0ba82926"
     ),
 )
diff --git a/core/tests/test_apps.bitcoin.ownership_proof.py b/core/tests/test_apps.bitcoin.ownership_proof.py
index efaab336..ab5688bd 100644
--- a/core/tests/test_apps.bitcoin.ownership_proof.py
+++ b/core/tests/test_apps.bitcoin.ownership_proof.py
@@ -40,7 +40,7 @@ class TestOwnershipProof(unittest.TestCase):
         ownership_id = ownership.get_identifier(script_pubkey, keychain)
         self.assertEqual(
             ownership_id,
-            unhexlify(
+            bytes.fromhex(
                 "a122407efc198211c81af4450f40b235d54775efd934d16b9e31c6ce9bad5707"
             ),
         )
@@ -57,13 +57,13 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "3045022100c0dc28bb563fc5fea76cacff75dba9cb4122412faae01937cdebccfb065f9a7002202e980bfbd8a434a7fc4cd2ca49da476ce98ca097437f8159b1a386b41fcdfac5"
             ),
         )
         self.assertEqual(
             proof,
-            unhexlify(
+            bytes.fromhex(
                 "534c00190001a122407efc198211c81af4450f40b235d54775efd934d16b9e31c6ce9bad57070002483045022100c0dc28bb563fc5fea76cacff75dba9cb4122412faae01937cdebccfb065f9a7002202e980bfbd8a434a7fc4cd2ca49da476ce98ca097437f8159b1a386b41fcdfac50121032ef68318c8f6aaa0adec0199c69901f0db7d3485eb38d9ad235221dc3d61154b"
             ),
         )
@@ -92,7 +92,7 @@ class TestOwnershipProof(unittest.TestCase):
 
         self.assertEqual(
             ownership_id,
-            unhexlify(
+            bytes.fromhex(
                 "92caf0b8daf78f1d388dbbceaec34bd2dabc31b217e32343663667f6694a3f46"
             ),
         )
@@ -109,13 +109,13 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "304402207f1003c59661ddf564af2e10d19ad8d6a1a47ad30e7052197d95fd65d186a67802205f0a804509980fec1b063554aadd8fb871d7c9fe934087cba2da09cbeff8531c"
             ),
         )
         self.assertEqual(
             proof,
-            unhexlify(
+            bytes.fromhex(
                 "534c0019010192caf0b8daf78f1d388dbbceaec34bd2dabc31b217e32343663667f6694a3f4617160014e0cffbee1925a411844f44c3b8d81365ab51d0360247304402207f1003c59661ddf564af2e10d19ad8d6a1a47ad30e7052197d95fd65d186a67802205f0a804509980fec1b063554aadd8fb871d7c9fe934087cba2da09cbeff8531c012103a961687895a78da9aef98eed8e1f2a3e91cfb69d2f3cf11cbd0bb1773d951928"
             ),
         )
@@ -143,7 +143,7 @@ class TestOwnershipProof(unittest.TestCase):
         ownership_id = ownership.get_identifier(script_pubkey, keychain)
         self.assertEqual(
             ownership_id,
-            unhexlify(
+            bytes.fromhex(
                 "dc18066224b9e30e306303436dc18ab881c7266c13790350a3fe415e438135ec"
             ),
         )
@@ -160,13 +160,13 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "647d6af883107a870417e808abe424882bd28ee04a28ba85a7e99400e1b9485075733695964c2a0fa02d4439ab80830e9566ccbd10f2597f5513eff9f03a0497"
             ),
         )
         self.assertEqual(
             proof,
-            unhexlify(
+            bytes.fromhex(
                 "534c00190001dc18066224b9e30e306303436dc18ab881c7266c13790350a3fe415e438135ec000140647d6af883107a870417e808abe424882bd28ee04a28ba85a7e99400e1b9485075733695964c2a0fa02d4439ab80830e9566ccbd10f2597f5513eff9f03a0497"
             ),
         )
@@ -194,7 +194,7 @@ class TestOwnershipProof(unittest.TestCase):
         ownership_id = ownership.get_identifier(script_pubkey, keychain)
         self.assertEqual(
             ownership_id,
-            unhexlify(
+            bytes.fromhex(
                 "ccc49ac5fede0efc80725fbda8b763d4e62a221c51cc5425076cffa7722c0bda"
             ),
         )
@@ -211,13 +211,13 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "3045022100e818002d0a85438a7f2140503a6aa0a6af6002fa956d0101fd3db24e776e546f0220430fd59dc1498bc96ab6e71a4829b60224828cf1fc35edc98e0973db203ca3f0"
             ),
         )
         self.assertEqual(
             proof,
-            unhexlify(
+            bytes.fromhex(
                 "534c00190001ccc49ac5fede0efc80725fbda8b763d4e62a221c51cc5425076cffa7722c0bda6b483045022100e818002d0a85438a7f2140503a6aa0a6af6002fa956d0101fd3db24e776e546f0220430fd59dc1498bc96ab6e71a4829b60224828cf1fc35edc98e0973db203ca3f0012102f63159e21fbcb54221ec993def967ad2183a9c243c8bff6e7d60f4d5ed3b386500"
             ),
         )
@@ -240,8 +240,8 @@ class TestOwnershipProof(unittest.TestCase):
         commitment_data = b""
 
         # Proof for "all all ... all" seed without passphrase.
-        script_pubkey = unhexlify("0014b2f771c370ccf219cd3059cda92bdf7f00cf2103")
-        proof = unhexlify(
+        script_pubkey = bytes.fromhex("0014b2f771c370ccf219cd3059cda92bdf7f00cf2103")
+        proof = bytes.fromhex(
             "534c00190001a122407efc198211c81af4450f40b235d54775efd934d16b9e31c6ce9bad57070002483045022100c0dc28bb563fc5fea76cacff75dba9cb4122412faae01937cdebccfb065f9a7002202e980bfbd8a434a7fc4cd2ca49da476ce98ca097437f8159b1a386b41fcdfac50121032ef68318c8f6aaa0adec0199c69901f0db7d3485eb38d9ad235221dc3d61154b"
         )
         self.assertTrue(
@@ -263,10 +263,10 @@ class TestOwnershipProof(unittest.TestCase):
         commitment_data = b""
 
         # Proof for "all all ... all" seed without passphrase.
-        script_pubkey = unhexlify(
+        script_pubkey = bytes.fromhex(
             "51204102897557de0cafea0a8401ea5b59668eccb753e4b100aebe6a19609f3cc79f"
         )
-        proof = unhexlify(
+        proof = bytes.fromhex(
             "534c00190001dc18066224b9e30e306303436dc18ab881c7266c13790350a3fe415e438135ec0001401b553e5b9cc787b531bbc78417aea901272b4ea905136a2babc4d6ca471549743b5e0e39ddc14e620b254e42faa7f6d5bd953e97aa231d764d21bc5a58e8b7d9"
         )
         self.assertTrue(
@@ -322,19 +322,19 @@ class TestOwnershipProof(unittest.TestCase):
         ]
         self.assertEqual(
             ownership_ids[0],
-            unhexlify(
+            bytes.fromhex(
                 "309c4ffec5c228cc836b51d572c0a730dbabd39df9f01862502ac9eabcdeb94a"
             ),
         )
         self.assertEqual(
             ownership_ids[1],
-            unhexlify(
+            bytes.fromhex(
                 "46307177b959c48bf2eb516e0463bb651aad388c7f8f597320df7854212fa344"
             ),
         )
         self.assertEqual(
             ownership_ids[2],
-            unhexlify(
+            bytes.fromhex(
                 "3892f9573e08cedff9160b243759520733a980fed45b131a8bba171317ae5d94"
             ),
         )
@@ -352,7 +352,7 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "30450221009d8cd2d792633732b3a406ea86072e94c72c0d1ffb5ddde466993ee2142eeef502206fa9c6273ab35400ebf689028ebcf8d2031edb3326106339e92d499652dc4303"
             ),
         )
@@ -371,13 +371,13 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "304402205fae1218bc4600ad6c28b6093e8f3757603681b024e60f1d92fca579bfce210b022011d6f1c6ef1c7f7601f635ed237dafc774386dd9f4be0aef85e3af3f095d8a92"
             ),
         )
         self.assertEqual(
             proof,
-            unhexlify(
+            bytes.fromhex(
                 "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"
             ),
         )
@@ -425,7 +425,7 @@ class TestOwnershipProof(unittest.TestCase):
         ownership_ids = [b"\x00" * 32, b"\x01" * 32, b"\x02" * 32, ownership_id]
         self.assertEqual(
             ownership_id,
-            unhexlify(
+            bytes.fromhex(
                 "66f99db388dfa7ae137f7bdb5f0004b4d6968014921cfaff1fec042e3bb83ae0"
             ),
         )
@@ -443,7 +443,7 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "30450221008c2c61ac2b50fd5f644baf5e8815b41caaf41d3b085d6e79c1ab38ab9ff4ef0702206742f837eddd4484ebf642e0bcb9621fe39165d3c9d62706bb01b2a8d854fb39"
             ),
         )
@@ -462,7 +462,7 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "304402200f5ec86b369f6a980a237944a1a06e6615afb147c6d84baf28cd1b8a58faf52702205614240e1582adeaa84685398a24d3678d0781371678b402b290ae3de3e058ee"
             ),
         )
@@ -481,13 +481,13 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "304402201ce53fcd797b6f5ceefa839817d6285551ff420457503ae2dab3f90ca1f6f2330220522f030423c22d5582c4f8fe243839031f584642ba5c085af712145d1e8146b7"
             ),
         )
         self.assertEqual(
             proof,
-            unhexlify(
+            bytes.fromhex(
                 "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"
             ),
         )
@@ -535,7 +535,7 @@ class TestOwnershipProof(unittest.TestCase):
         ownership_ids = [b"\x00" * 32, ownership_id]
         self.assertEqual(
             ownership_id,
-            unhexlify(
+            bytes.fromhex(
                 "ce4ee8298ad105c3495a1d2b620343133521ab34de2450deeb32eec39475fef4"
             ),
         )
@@ -553,7 +553,7 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "3044022058091b367ab67281963029435046abcb51057d143077a36737780a7cbcd6c1af02202f54147645b970c60b5b631b233ed93c15304294a4214b2c44b57db84815ca14"
             ),
         )
@@ -572,13 +572,13 @@ class TestOwnershipProof(unittest.TestCase):
         )
         self.assertEqual(
             signature,
-            unhexlify(
+            bytes.fromhex(
                 "304402200d8f270ea9a80678f266b3fbe6e4aa59aab46b440d8066dcf46fb46a4beaf58202201198d73e355158ebf532ca6527e28ea97b79594e016a65c7a0c68813c26271ff"
             ),
         )
         self.assertEqual(
             proof,
-            unhexlify(
+            bytes.fromhex(
                 "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"
             ),
         )
diff --git a/core/tests/test_apps.bitcoin.segwit.bip143.native_p2wpkh.py b/core/tests/test_apps.bitcoin.segwit.bip143.native_p2wpkh.py
index b93e7658..e28bb392 100644
--- a/core/tests/test_apps.bitcoin.segwit.bip143.native_p2wpkh.py
+++ b/core/tests/test_apps.bitcoin.segwit.bip143.native_p2wpkh.py
@@ -27,7 +27,7 @@ class TestSegwitBip143NativeP2WPKH(unittest.TestCase):
     inp1 = TxInput(
         address_n=[0],
         # Trezor expects hash in reversed format
-        prev_hash=unhexlify(
+        prev_hash=bytes.fromhex(
             "9f96ade4b41d5433f4eda31e1738ec2b36f6e7d1420d94a6af99801a88f7f7ff"
         ),
         prev_index=0,
@@ -39,7 +39,7 @@ class TestSegwitBip143NativeP2WPKH(unittest.TestCase):
     inp2 = TxInput(
         address_n=[1],
         # Trezor expects hash in reversed format
-        prev_hash=unhexlify(
+        prev_hash=bytes.fromhex(
             "8ac60eb9575db5b2d987e29f301b5b819ea83a5c6579d282d189cc04b8e151ef"
         ),
         prev_index=1,
@@ -70,8 +70,8 @@ class TestSegwitBip143NativeP2WPKH(unittest.TestCase):
         sig_hasher.add_input(self.inp2, b"")
         prevouts_hash = get_tx_hash(sig_hasher.h_prevouts, double=coin.sign_hash_double)
         self.assertEqual(
-            hexlify(prevouts_hash),
-            b"96b827c8483d4e9b96712b6713a7b68d6e8003a781feba36c31143470b4efd37",
+            prevouts_hash.hex(),
+            "96b827c8483d4e9b96712b6713a7b68d6e8003a781feba36c31143470b4efd37",
         )
 
     def test_sequence(self):
@@ -83,8 +83,8 @@ class TestSegwitBip143NativeP2WPKH(unittest.TestCase):
             sig_hasher.h_sequences, double=coin.sign_hash_double
         )
         self.assertEqual(
-            hexlify(sequence_hash),
-            b"52b0a642eea2fb7ae638c36f6252b6750293dbe574a806984b8e4d8548339a3b",
+            sequence_hash.hex(),
+            "52b0a642eea2fb7ae638c36f6252b6750293dbe574a806984b8e4d8548339a3b",
         )
 
     def test_outputs(self):
@@ -98,8 +98,8 @@ class TestSegwitBip143NativeP2WPKH(unittest.TestCase):
 
         outputs_hash = get_tx_hash(sig_hasher.h_outputs, double=coin.sign_hash_double)
         self.assertEqual(
-            hexlify(outputs_hash),
-            b"863ef3e1a92afbfdb97f31ad0fc7683ee943e9abcf2501590ff8f6551f47e5e5",
+            outputs_hash.hex(),
+            "863ef3e1a92afbfdb97f31ad0fc7683ee943e9abcf2501590ff8f6551f47e5e5",
         )
 
     def test_preimage_testdata(self):
@@ -127,8 +127,8 @@ class TestSegwitBip143NativeP2WPKH(unittest.TestCase):
             self.inp2, [node.public_key()], 1, self.tx, coin, SigHashType.SIGHASH_ALL
         )
         self.assertEqual(
-            hexlify(result),
-            b"2fa3f1351618b2532228d7182d3221d95c21fd3d496e7e22e9ded873cf022a8b",
+            result.hex(),
+            "2fa3f1351618b2532228d7182d3221d95c21fd3d496e7e22e9ded873cf022a8b",
         )
 
 
diff --git a/core/tests/test_apps.bitcoin.segwit.bip143.p2wpkh_in_p2sh.py b/core/tests/test_apps.bitcoin.segwit.bip143.p2wpkh_in_p2sh.py
index a5fcad4e..4c6c549c 100644
--- a/core/tests/test_apps.bitcoin.segwit.bip143.p2wpkh_in_p2sh.py
+++ b/core/tests/test_apps.bitcoin.segwit.bip143.p2wpkh_in_p2sh.py
@@ -27,7 +27,7 @@ class TestSegwitBip143(unittest.TestCase):
     inp1 = TxInput(
         address_n=[0],
         # Trezor expects hash in reversed format
-        prev_hash=unhexlify(
+        prev_hash=bytes.fromhex(
             "77541aeb3c4dac9260b68f74f44c973081a9d4cb2ebe8038b2d70faa201b6bdb"
         ),
         prev_index=1,
@@ -57,8 +57,8 @@ class TestSegwitBip143(unittest.TestCase):
         sig_hasher.add_input(self.inp1, b"")
         prevouts_hash = get_tx_hash(sig_hasher.h_prevouts, double=coin.sign_hash_double)
         self.assertEqual(
-            hexlify(prevouts_hash),
-            b"b0287b4a252ac05af83d2dcef00ba313af78a3e9c329afa216eb3aa2a7b4613a",
+            prevouts_hash.hex(),
+            "b0287b4a252ac05af83d2dcef00ba313af78a3e9c329afa216eb3aa2a7b4613a",
         )
 
     def test_bip143_sequence(self):
@@ -69,8 +69,8 @@ class TestSegwitBip143(unittest.TestCase):
             sig_hasher.h_sequences, double=coin.sign_hash_double
         )
         self.assertEqual(
-            hexlify(sequence_hash),
-            b"18606b350cd8bf565266bc352f0caddcf01e8fa789dd8a15386327cf8cabe198",
+            sequence_hash.hex(),
+            "18606b350cd8bf565266bc352f0caddcf01e8fa789dd8a15386327cf8cabe198",
         )
 
     def test_bip143_outputs(self):
@@ -84,8 +84,8 @@ class TestSegwitBip143(unittest.TestCase):
 
         outputs_hash = get_tx_hash(sig_hasher.h_outputs, double=coin.sign_hash_double)
         self.assertEqual(
-            hexlify(outputs_hash),
-            b"de984f44532e2173ca0d64314fcefe6d30da6f8cf27bafa706da61df8a226c83",
+            outputs_hash.hex(),
+            "de984f44532e2173ca0d64314fcefe6d30da6f8cf27bafa706da61df8a226c83",
         )
 
     def test_bip143_preimage_testdata(self):
@@ -109,8 +109,8 @@ class TestSegwitBip143(unittest.TestCase):
             self.inp1, [node.public_key()], 1, self.tx, coin, SigHashType.SIGHASH_ALL
         )
         self.assertEqual(
-            hexlify(result),
-            b"6e28aca7041720995d4acf59bbda64eef5d6f23723d23f2e994757546674bbd9",
+            result.hex(),
+            "6e28aca7041720995d4acf59bbda64eef5d6f23723d23f2e994757546674bbd9",
         )
 
 
diff --git a/core/tests/test_apps.bitcoin.segwit.bip341.p2tr.py b/core/tests/test_apps.bitcoin.segwit.bip341.p2tr.py
index bec4b1aa..c39ab798 100644
--- a/core/tests/test_apps.bitcoin.segwit.bip341.p2tr.py
+++ b/core/tests/test_apps.bitcoin.segwit.bip341.p2tr.py
@@ -20,11 +20,11 @@ VECTORS = [
         "inputs": [
             TxInput(
                 amount=420000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "9c4e333b5f116359b5f5578fe4a74c6f58b3bab9d28149a583da86f6bf0ce27d"
                 ),
                 prev_index=1,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "512053a1f6e454df1aa2776a2814a721372d6258050de330b3c6d10ee8f4e0dda343"
                 ),
                 script_type=InputScriptType.SPENDTAPROOT,
@@ -32,11 +32,11 @@ VECTORS = [
             ),
             TxInput(
                 amount=462000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "99ddaf6d9b75447d5127e17312f6def68acba2d4f464d0e2ac93137bb5cab7d7"
                 ),
                 prev_index=0,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "5120147c9c57132f6e7ecddba9800bb0c4449251c92a1e60371ee77557b6620f3ea3"
                 ),
                 script_type=InputScriptType.SPENDTAPROOT,
@@ -44,11 +44,11 @@ VECTORS = [
             ),
             TxInput(
                 amount=294000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "4218a419542757d960174457dc82e06b3613ac8ed2c528926833433883f5e1f8"
                 ),
                 prev_index=0,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "76a914751e76e8199196d454941c45d1b3a323f1433bd688ac"
                 ),
                 script_type=InputScriptType.SPENDADDRESS,
@@ -56,11 +56,11 @@ VECTORS = [
             ),
             TxInput(
                 amount=504000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "3b8504d63a84a0fd1043e7ec832adaeeb7382a6d3ca762b10cb363aa809168f0"
                 ),
                 prev_index=1,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "5120e4d810fd50586274face62b8a807eb9719cef49c04177cc6b76a9a4251d5450e"
                 ),
                 script_type=InputScriptType.SPENDTAPROOT,
@@ -68,11 +68,11 @@ VECTORS = [
             ),
             TxInput(
                 amount=630000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "7a488f58881cecb2523690afcf22eb8892372bae018a125e1f006283a38c630c"
                 ),
                 prev_index=0,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "512091b64d5324723a985170e4dc5a0f84c041804f2cd12660fa5dec09fc21783605"
                 ),
                 script_type=InputScriptType.SPENDTAPROOT,
@@ -80,21 +80,23 @@ VECTORS = [
             ),
             TxInput(
                 amount=378000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "50d0ac326d44a3a29358214139fecb8a7129aa2f2dbeb28e96aa6fc6bd496195"
                 ),
                 prev_index=0,
-                script_pubkey=unhexlify("00147dd65592d0ab2fe0d0257d571abf032cd9db93dc"),
+                script_pubkey=bytes.fromhex(
+                    "00147dd65592d0ab2fe0d0257d571abf032cd9db93dc"
+                ),
                 script_type=InputScriptType.SPENDWITNESS,
                 sequence=0x00000000,
             ),
             TxInput(
                 amount=672000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "3a013eb5a6a664585ddbc210e02147847cde7317c0ce4e056ee4f0f167a2ef81"
                 ),
                 prev_index=1,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "512075169f4001aa68f15bbed28b218df1d0a62cbbcf1188c6665110c293c907b831"
                 ),
                 script_type=InputScriptType.SPENDTAPROOT,
@@ -102,11 +104,11 @@ VECTORS = [
             ),
             TxInput(
                 amount=546000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "eebd075c693d6823dd39fe11e3a6d1993fdec6109860937d50624a3c9c6690a6"
                 ),
                 prev_index=0,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "51200f63ca2c7639b9bb4be0465cc0aa3ee78a0761ba5f5f7d6ff8eab340f09da561"
                 ),
                 script_type=InputScriptType.SPENDTAPROOT,
@@ -114,11 +116,11 @@ VECTORS = [
             ),
             TxInput(
                 amount=588000000,
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "9e667967d1eb839b9b0a1fd17b2f29e838ff0240a83c61f896844377f8b57a72"
                 ),
                 prev_index=1,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "5120053690babeabbb7850c32eead0acf8df990ced79f7a31e358fabf2658b4bc587"
                 ),
                 script_type=InputScriptType.SPENDTAPROOT,
@@ -128,44 +130,44 @@ VECTORS = [
         "outputs": [
             PrevOutput(
                 amount=1000000000,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "76a91406afd46bcdfd22ef94ac122aa11f241244a37ecc88ac"
                 ),  # 1cMh228HTCiwS8ZsaakH8A8wze1JR5ZsP
             ),
             PrevOutput(
                 amount=3410000000,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "ac9a87f5594be208f8532db38cff670c450ed2fea8fcdefcc9a663f78bab962b"
                 ),
             ),
         ],
-        "sha_amounts": unhexlify(
+        "sha_amounts": bytes.fromhex(
             "58a6964a4f5f8f0b642ded0a8a553be7622a719da71d1f5befcefcdee8e0fde6"
         ),
-        "sha_outputs": unhexlify(
+        "sha_outputs": bytes.fromhex(
             "a2e6dab7c1f0dcd297c8d61647fd17d821541ea69c3cc37dcbad7f90d4eb4bc5"
         ),
-        "sha_prevouts": unhexlify(
+        "sha_prevouts": bytes.fromhex(
             "2bd4d5a417902673919b2c209d14f8efaa285ede022a88d6a45edf4bdd43db11"
         ),
-        "sha_scriptpubkeys": unhexlify(
+        "sha_scriptpubkeys": bytes.fromhex(
             "26003c31f2f1786d22fcb3e1f690ddcdff53627a59f9219d5a2c77985a8930c0"
         ),
-        "sha_sequences": unhexlify(
+        "sha_sequences": bytes.fromhex(
             "18959c7221ab5ce9e26c3cd67b22c24f8baa54bac281d8e6b05e400e6c3a957e"
         ),
         "signature_hashes": [
             {
                 "index": 3,
                 "hash_type": SigHashType.SIGHASH_ALL,
-                "result": unhexlify(
+                "result": bytes.fromhex(
                     "6ffd256e108685b41831385f57eebf2fca041bc6b5e607ea11b3e03d4cf9d9ba"
                 ),
             },
             {
                 "index": 4,
                 "hash_type": SigHashType.SIGHASH_ALL_TAPROOT,
-                "result": unhexlify(
+                "result": bytes.fromhex(
                     "9f90136737540ccc18707e1fd398ad222a1a7e4dd65cbfd22dbe4660191efa58"
                 ),
             },
@@ -181,7 +183,7 @@ VECTORS = [
         ),
         "inputs": [
             TxInput(
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "8dcb562f365cfeb249be74e7865135cf035add604234fc0d8330b49bec92605f"
                 ),
                 prev_index=0,
@@ -189,10 +191,12 @@ VECTORS = [
                 script_type=InputScriptType.SPENDWITNESS,
                 multisig=None,
                 sequence=0,
-                script_pubkey=unhexlify("0014196a5bea745288a7f947993c28e3a0f2108d2e0a"),
+                script_pubkey=bytes.fromhex(
+                    "0014196a5bea745288a7f947993c28e3a0f2108d2e0a"
+                ),
             ),
             TxInput(
-                prev_hash=unhexlify(
+                prev_hash=bytes.fromhex(
                     "e1323b577ed0d216f4e52bf2b4c490710dfa0088dae3d15e8ba26ad792184361"
                 ),
                 prev_index=1,
@@ -200,7 +204,7 @@ VECTORS = [
                 amount=600000000,  # 6 btc
                 script_type=InputScriptType.SPENDTAPROOT,
                 sequence=0,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "512029d942d0408906b359397b6f87c5145814a9aefc8c396dd05efa8b5b73576bf2"
                 ),
             ),
@@ -208,31 +212,31 @@ VECTORS = [
         "outputs": [
             PrevOutput(
                 amount=1000000000,
-                script_pubkey=unhexlify(
+                script_pubkey=bytes.fromhex(
                     "76a914682dfdbc97ab5c31300f36d3c12c6fd854b1b35a88ac"
                 ),  # 1AVrNUPAytZZbisNduCacWcEVJS6eGRvaa
             ),
         ],
-        "sha_amounts": unhexlify(
+        "sha_amounts": bytes.fromhex(
             "5733468db74734c00efa0b466bca091d8f1aab074af2538f36bd0a734a5940c5"
         ),
-        "sha_outputs": unhexlify(
+        "sha_outputs": bytes.fromhex(
             "8cdee56004a241f9c79cc55b7d79eaed04909d84660502a2d4e9c357c2047cf5"
         ),
-        "sha_prevouts": unhexlify(
+        "sha_prevouts": bytes.fromhex(
             "32553b113292dfa8216546e721388a6c19c76626ca65dc187e0348d6ed445f81"
         ),
-        "sha_scriptpubkeys": unhexlify(
+        "sha_scriptpubkeys": bytes.fromhex(
             "423cd73484fc5e3e0a623442846c279c2216f25a2f32d161fea6c5821a1adde7"
         ),
-        "sha_sequences": unhexlify(
+        "sha_sequences": bytes.fromhex(
             "af5570f5a1810b7af78caf4bc70a660f0df51e42baf91d4de5b2328de0e83dfc"
         ),
         "signature_hashes": [
             {
                 "index": 1,
                 "hash_type": SigHashType.SIGHASH_ALL_TAPROOT,
-                "result": unhexlify(
+                "result": bytes.fromhex(
                     "07333acfe6dce8196f1ad62b2e039a3d9f0b6627bf955be767c519c0f8789ff4"
                 ),
             },
diff --git a/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh.py b/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh.py
index 1c1ebc84..26a94d65 100644
--- a/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh.py
+++ b/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh.py
@@ -47,7 +47,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
             # 49'/1'/0'/0/0" - tb1qqzv60m9ajw8drqulta4ld4gfx0rdh82un5s65s
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
             amount=12300000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "09144602765ce3dd8f4329445b20e3684e948709c5cdcaf12da3bb079c99448a"
             ),
             prev_index=0,
@@ -59,19 +59,21 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
             version=1, lock_time=0, inputs_count=1, outputs_count=2, extra_data_len=0
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify("160014d16b8c0680c61fc6ed2e407455715055e41052f5"),
-            prev_hash=unhexlify(
+            script_sig=bytes.fromhex("160014d16b8c0680c61fc6ed2e407455715055e41052f5"),
+            prev_hash=bytes.fromhex(
                 "20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337"
             ),
             prev_index=0,
             sequence=4294967295,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("00140099a7ecbd938ed1839f5f6bf6d50933c6db9d5c"),
+            script_pubkey=bytes.fromhex("00140099a7ecbd938ed1839f5f6bf6d50933c6db9d5c"),
             amount=12300000,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify("a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"),
+            script_pubkey=bytes.fromhex(
+                "a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
+            ),
             amount=111145789,
         )
 
@@ -170,7 +172,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -179,7 +181,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized inp1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "8a44999c07bba32df1cacdc50987944e68e3205b4429438fdde35c76024614090000000000ffffffff02"
                     ),
                 ),
@@ -190,7 +192,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "404b4c000000000017a9147a55d61848e77ca266e79a39bfc85c580a6426c987"
                     ),
                     signature_index=None,
@@ -204,7 +206,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out2
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "a8386f0000000000160014d16b8c0680c61fc6ed2e407455715055e41052f5"
                     ),
                     signature_index=None,
@@ -216,11 +218,11 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 request_type=TXFINISHED,
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "02483045022100a7ca8f097525f9044e64376dc0a0f5d4aeb8d15d66808ba97979a0475b06b66502200597c8ebcef63e047f9aeef1a8001d3560470cf896c12f6990eec4faec599b950121033add1f0e8e3c3136f7428dd4a4de1057380bd311f5b0856e2269170b4ffa65bf00000000"
                     ),
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100a7ca8f097525f9044e64376dc0a0f5d4aeb8d15d66808ba97979a0475b06b66502200597c8ebcef63e047f9aeef1a8001d3560470cf896c12f6990eec4faec599b95"
                     ),
                 ),
@@ -247,7 +249,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
             # 49'/1'/0'/0/0" - tb1qqzv60m9ajw8drqulta4ld4gfx0rdh82un5s65s
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
             amount=12300000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "09144602765ce3dd8f4329445b20e3684e948709c5cdcaf12da3bb079c99448a"
             ),
             prev_index=0,
@@ -259,19 +261,21 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
             version=1, lock_time=0, inputs_count=1, outputs_count=2, extra_data_len=0
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify("160014d16b8c0680c61fc6ed2e407455715055e41052f5"),
-            prev_hash=unhexlify(
+            script_sig=bytes.fromhex("160014d16b8c0680c61fc6ed2e407455715055e41052f5"),
+            prev_hash=bytes.fromhex(
                 "20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337"
             ),
             prev_index=0,
             sequence=4294967295,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("00140099a7ecbd938ed1839f5f6bf6d50933c6db9d5c"),
+            script_pubkey=bytes.fromhex("00140099a7ecbd938ed1839f5f6bf6d50933c6db9d5c"),
             amount=12300000,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify("a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"),
+            script_pubkey=bytes.fromhex(
+                "a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
+            ),
             amount=111145789,
         )
 
@@ -374,7 +378,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -383,7 +387,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized inp1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "8a44999c07bba32df1cacdc50987944e68e3205b4429438fdde35c76024614090000000000ffffffff02"
                     ),
                 ),
@@ -395,7 +399,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "404b4c000000000017a9147a55d61848e77ca266e79a39bfc85c580a6426c987"
                     ),
                     signature_index=None,
@@ -409,7 +413,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out2
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "a8386f0000000000160014d16b8c0680c61fc6ed2e407455715055e41052f5"
                     ),
                     signature_index=None,
@@ -421,11 +425,11 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
                 request_type=TXFINISHED,
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "02483045022100a7ca8f097525f9044e64376dc0a0f5d4aeb8d15d66808ba97979a0475b06b66502200597c8ebcef63e047f9aeef1a8001d3560470cf896c12f6990eec4faec599b950121033add1f0e8e3c3136f7428dd4a4de1057380bd311f5b0856e2269170b4ffa65bf00000000"
                     ),
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100a7ca8f097525f9044e64376dc0a0f5d4aeb8d15d66808ba97979a0475b06b66502200597c8ebcef63e047f9aeef1a8001d3560470cf896c12f6990eec4faec599b95"
                     ),
                 ),
@@ -452,7 +456,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
             # 49'/1'/0'/0/0" - tb1qqzv60m9ajw8drqulta4ld4gfx0rdh82un5s65s
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
             amount=12300000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "09144602765ce3dd8f4329445b20e3684e948709c5cdcaf12da3bb079c99448a"
             ),
             prev_index=0,
diff --git a/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh_grs.py b/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh_grs.py
index a1b1ef68..c5e6e695 100644
--- a/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh_grs.py
+++ b/core/tests/test_apps.bitcoin.segwit.signtx.native_p2wpkh_grs.py
@@ -48,7 +48,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
             # 84'/1'/0'/0/0" - tgrs1qkvwu9g3k2pdxewfqr7syz89r3gj557l3ued7ja
             address_n=[84 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
             amount=12300000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "4f2f857f39ed1afe05542d058fb0be865a387446e32fc876d086203f483f61d1"
             ),
             prev_index=0,
@@ -64,21 +64,21 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
             extra_data_len=0,
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "483045022100d9615361c044e91f6dd7bb4455f3ad686cd5a663d7800bb74c448b2706500ccb022026bed24b81a501e8398411c5a9a793741d9bfe39617d51c363dde0a84f44f4f9012102659a6eefcc72d6f2eff92e57095388b17db0b06034946ecd44120e5e7a830ff4"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "1c92508b38239e5c10b23fb46dcf765ee2f3a95b835edbf0943ec21b21711160"
             ),
             prev_index=1,
             sequence=4294967293,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("0014b31dc2a236505a6cb9201fa0411ca38a254a7bf1"),
+            script_pubkey=bytes.fromhex("0014b31dc2a236505a6cb9201fa0411ca38a254a7bf1"),
             amount=12300000,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a91438cc090e4a4b2e458c33fe35af1c5c0094699ac288ac"
             ),
             amount=9887699777,
@@ -183,7 +183,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -192,7 +192,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized inp1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "d1613f483f2086d076c82fe34674385a86beb08f052d5405fe1aed397f852f4f0000000000feffffff02"
                     ),
                 ),
@@ -203,7 +203,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "404b4c000000000017a9147a55d61848e77ca266e79a39bfc85c580a6426c987"
                     ),
                     signature_index=None,
@@ -217,7 +217,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out2
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "a8386f0000000000160014cc8067093f6f843d6d3e22004a4290cd0c0f336b"
                     ),
                     signature_index=None,
@@ -229,11 +229,11 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 request_type=TXFINISHED,
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "02483045022100ea8780bc1e60e14e945a80654a41748bbf1aa7d6f2e40a88d91dfc2de1f34bd10220181a474a3420444bd188501d8d270736e1e9fe379da9970de992ff445b0972e3012103adc58245cf28406af0ef5cc24b8afba7f1be6c72f279b642d85c48798685f862d9ed0900"
                     ),
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100ea8780bc1e60e14e945a80654a41748bbf1aa7d6f2e40a88d91dfc2de1f34bd10220181a474a3420444bd188501d8d270736e1e9fe379da9970de992ff445b0972e3"
                     ),
                 ),
@@ -260,7 +260,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
             # 84'/1'/0'/0/0" - tgrs1qkvwu9g3k2pdxewfqr7syz89r3gj557l3ued7ja
             address_n=[84 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
             amount=12300000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "4f2f857f39ed1afe05542d058fb0be865a387446e32fc876d086203f483f61d1"
             ),
             prev_index=0,
@@ -276,21 +276,21 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
             extra_data_len=0,
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "483045022100d9615361c044e91f6dd7bb4455f3ad686cd5a663d7800bb74c448b2706500ccb022026bed24b81a501e8398411c5a9a793741d9bfe39617d51c363dde0a84f44f4f9012102659a6eefcc72d6f2eff92e57095388b17db0b06034946ecd44120e5e7a830ff4"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "1c92508b38239e5c10b23fb46dcf765ee2f3a95b835edbf0943ec21b21711160"
             ),
             prev_index=1,
             sequence=4294967293,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("0014b31dc2a236505a6cb9201fa0411ca38a254a7bf1"),
+            script_pubkey=bytes.fromhex("0014b31dc2a236505a6cb9201fa0411ca38a254a7bf1"),
             amount=12300000,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a91438cc090e4a4b2e458c33fe35af1c5c0094699ac288ac"
             ),
             amount=9887699777,
@@ -397,7 +397,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -406,7 +406,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized inp1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "d1613f483f2086d076c82fe34674385a86beb08f052d5405fe1aed397f852f4f0000000000feffffff02"
                     ),
                 ),
@@ -418,7 +418,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "404b4c000000000017a9147a55d61848e77ca266e79a39bfc85c580a6426c987"
                     ),
                     signature_index=None,
@@ -432,7 +432,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out2
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "a8386f0000000000160014cc8067093f6f843d6d3e22004a4290cd0c0f336b"
                     ),
                     signature_index=None,
@@ -444,11 +444,11 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
                 request_type=TXFINISHED,
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "02483045022100ea8780bc1e60e14e945a80654a41748bbf1aa7d6f2e40a88d91dfc2de1f34bd10220181a474a3420444bd188501d8d270736e1e9fe379da9970de992ff445b0972e3012103adc58245cf28406af0ef5cc24b8afba7f1be6c72f279b642d85c48798685f862d9ed0900"
                     ),
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100ea8780bc1e60e14e945a80654a41748bbf1aa7d6f2e40a88d91dfc2de1f34bd10220181a474a3420444bd188501d8d270736e1e9fe379da9970de992ff445b0972e3"
                     ),
                 ),
diff --git a/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh.py b/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh.py
index 289e7f75..1e492d92 100644
--- a/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh.py
+++ b/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh.py
@@ -47,7 +47,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
             # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
             amount=123456789,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337"
             ),
             prev_index=0,
@@ -59,21 +59,23 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
             version=1, lock_time=0, inputs_count=1, outputs_count=2, extra_data_len=0
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "4730440220548e087d0426b20b8a571b03b9e05829f7558b80c53c12143e342f56ab29e51d02205b68cb7fb223981d4c999725ac1485a982c4259c4f50b8280f137878c232998a012102794a25b254a268e59a5869da57fbae2fadc6727cb3309321dab409b12b2fa17c"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "802cabf0843b945eabe136d7fc7c89f41021658abf56cba000acbce88c41143a"
             ),
             prev_index=0,
             sequence=4294967295,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"),
+            script_pubkey=bytes.fromhex(
+                "a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
+            ),
             amount=123456789,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a914b84bacdcd8f4cc59274a5bfb73f804ca10f7fd1488ac"
             ),
             amount=865519308,
@@ -177,7 +179,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -186,7 +188,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized inp1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "37c361fb8f2d9056ba8c98c5611930fcb48cacfdd0fe2e0449d83eea982f91200000000017160014d16b8c0680c61fc6ed2e407455715055e41052f5ffffffff02"
                     ),
                 ),
@@ -197,7 +199,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "e0aebb00000000001976a91414fdede0ddc3be652a0ce1afbc1b509a55b6b94888ac"
                     ),
                     signature_index=None,
@@ -211,7 +213,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out2
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "3df39f060000000017a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
                     ),
                     signature_index=None,
@@ -223,11 +225,11 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 request_type=TXFINISHED,
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "02483045022100ccd253bfdf8a5593cd7b6701370c531199f0f05a418cd547dfc7da3f21515f0f02203fa08a0753688871c220648f9edadbdb98af42e5d8269364a326572cf703895b012103e7bfe10708f715e8538c92d46ca50db6f657bbc455b7494e6a0303ccdb868b7900000000"
                     ),
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100ccd253bfdf8a5593cd7b6701370c531199f0f05a418cd547dfc7da3f21515f0f02203fa08a0753688871c220648f9edadbdb98af42e5d8269364a326572cf703895b"
                     ),
                 ),
@@ -254,7 +256,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
             # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
             amount=123456789,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337"
             ),
             prev_index=0,
@@ -266,21 +268,23 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
             version=1, lock_time=0, inputs_count=1, outputs_count=2, extra_data_len=0
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "4730440220548e087d0426b20b8a571b03b9e05829f7558b80c53c12143e342f56ab29e51d02205b68cb7fb223981d4c999725ac1485a982c4259c4f50b8280f137878c232998a012102794a25b254a268e59a5869da57fbae2fadc6727cb3309321dab409b12b2fa17c"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "802cabf0843b945eabe136d7fc7c89f41021658abf56cba000acbce88c41143a"
             ),
             prev_index=0,
             sequence=4294967295,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"),
+            script_pubkey=bytes.fromhex(
+                "a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
+            ),
             amount=123456789,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a914b84bacdcd8f4cc59274a5bfb73f804ca10f7fd1488ac"
             ),
             amount=865519308,
@@ -380,7 +384,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -389,7 +393,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized inp1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "37c361fb8f2d9056ba8c98c5611930fcb48cacfdd0fe2e0449d83eea982f91200000000017160014d16b8c0680c61fc6ed2e407455715055e41052f5ffffffff02"
                     ),
                 ),
@@ -401,7 +405,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "e0aebb00000000001976a91414fdede0ddc3be652a0ce1afbc1b509a55b6b94888ac"
                     ),
                     signature_index=None,
@@ -415,7 +419,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out2
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "3df39f060000000017a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
                     ),
                     signature_index=None,
@@ -427,11 +431,11 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 request_type=TXFINISHED,
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "02483045022100ccd253bfdf8a5593cd7b6701370c531199f0f05a418cd547dfc7da3f21515f0f02203fa08a0753688871c220648f9edadbdb98af42e5d8269364a326572cf703895b012103e7bfe10708f715e8538c92d46ca50db6f657bbc455b7494e6a0303ccdb868b7900000000"
                     ),
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100ccd253bfdf8a5593cd7b6701370c531199f0f05a418cd547dfc7da3f21515f0f02203fa08a0753688871c220648f9edadbdb98af42e5d8269364a326572cf703895b"
                     ),
                 ),
@@ -458,7 +462,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
             # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
             amount=10,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337"
             ),
             prev_index=0,
@@ -470,21 +474,23 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
             version=1, lock_time=0, inputs_count=1, outputs_count=2, extra_data_len=0
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "4730440220548e087d0426b20b8a571b03b9e05829f7558b80c53c12143e342f56ab29e51d02205b68cb7fb223981d4c999725ac1485a982c4259c4f50b8280f137878c232998a012102794a25b254a268e59a5869da57fbae2fadc6727cb3309321dab409b12b2fa17c"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "802cabf0843b945eabe136d7fc7c89f41021658abf56cba000acbce88c41143a"
             ),
             prev_index=0,
             sequence=4294967295,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"),
+            script_pubkey=bytes.fromhex(
+                "a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
+            ),
             amount=123456789,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a914b84bacdcd8f4cc59274a5bfb73f804ca10f7fd1488ac"
             ),
             amount=865519308,
@@ -494,7 +500,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
             # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
             amount=9,  # modified!
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337"
             ),
             prev_index=0,
@@ -591,7 +597,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
         ]
diff --git a/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh_grs.py b/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh_grs.py
index 4130cd4e..c3437984 100644
--- a/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh_grs.py
+++ b/core/tests/test_apps.bitcoin.segwit.signtx.p2wpkh_in_p2sh_grs.py
@@ -48,7 +48,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
             # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZYBtBZ7
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
             amount=123456789,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "09a48bce2f9d5c6e4f0cb9ea1b32d0891855e8acfe5334f9ebd72b9ad2de60cf"
             ),
             prev_index=0,
@@ -64,21 +64,23 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
             extra_data_len=0,
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "47304402201f8f57f708144c3a11da322546cb37bd385aa825d940c37e8016f0efd6ec3e9402202a41bc02c29e4f3f13efd4bededbcd4308a6393279111d614ee1f7635cf3e65701210371546a36bdf6bc82087301b3f6e759736dc8790150673d2e7e2715d2ad72f3a4"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "4f2f857f39ed1afe05542d058fb0be865a387446e32fc876d086203f483f61d1"
             ),
             prev_index=1,
             sequence=4294967294,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"),
+            script_pubkey=bytes.fromhex(
+                "a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
+            ),
             amount=123456789,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a91435528b20e9a793cf2c3a1cf9cff1f2127ad377da88ac"
             ),
             amount=9764242764,
@@ -188,7 +190,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -197,7 +199,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized inp1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "cf60ded29a2bd7ebf93453feace8551889d0321beab90c4f6e5c9d2fce8ba4090000000017160014d16b8c0680c61fc6ed2e407455715055e41052f5feffffff02"
                     ),
                 ),
@@ -208,7 +210,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "e0aebb00000000001976a914a579388225827d9f2fe9014add644487808c695d88ac"
                     ),
                     signature_index=None,
@@ -222,7 +224,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out2
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "3df39f060000000017a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
                     ),
                     signature_index=None,
@@ -234,11 +236,11 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 request_type=TXFINISHED,
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "02483045022100b7ce2972bcbc3a661fe320ba901e680913b2753fcb47055c9c6ba632fc4acf81022001c3cfd6c2fe92eb60f5176ce0f43707114dd7223da19c56f2df89c13c2fef80012103e7bfe10708f715e8538c92d46ca50db6f657bbc455b7494e6a0303ccdb868b7904ee0900"
                     ),
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100b7ce2972bcbc3a661fe320ba901e680913b2753fcb47055c9c6ba632fc4acf81022001c3cfd6c2fe92eb60f5176ce0f43707114dd7223da19c56f2df89c13c2fef80"
                     ),
                 ),
@@ -265,7 +267,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
             # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZYBtBZ7
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
             amount=123456789,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "09a48bce2f9d5c6e4f0cb9ea1b32d0891855e8acfe5334f9ebd72b9ad2de60cf"
             ),
             prev_index=0,
@@ -281,21 +283,23 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
             extra_data_len=0,
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "47304402201f8f57f708144c3a11da322546cb37bd385aa825d940c37e8016f0efd6ec3e9402202a41bc02c29e4f3f13efd4bededbcd4308a6393279111d614ee1f7635cf3e65701210371546a36bdf6bc82087301b3f6e759736dc8790150673d2e7e2715d2ad72f3a4"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "4f2f857f39ed1afe05542d058fb0be865a387446e32fc876d086203f483f61d1"
             ),
             prev_index=1,
             sequence=4294967294,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify("a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"),
+            script_pubkey=bytes.fromhex(
+                "a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
+            ),
             amount=123456789,
         )
         pout2 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a91435528b20e9a793cf2c3a1cf9cff1f2127ad377da88ac"
             ),
             amount=9764242764,
@@ -401,7 +405,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized header
-                    serialized_tx=unhexlify("01000000000101"),
+                    serialized_tx=bytes.fromhex("01000000000101"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -410,7 +414,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized inp1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "cf60ded29a2bd7ebf93453feace8551889d0321beab90c4f6e5c9d2fce8ba4090000000017160014d16b8c0680c61fc6ed2e407455715055e41052f5feffffff02"
                     ),
                 ),
@@ -422,7 +426,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out1
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "e0aebb00000000001976a914a579388225827d9f2fe9014add644487808c695d88ac"
                     ),
                     signature_index=None,
@@ -436,7 +440,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     # returned serialized out2
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "3df39f060000000017a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87"
                     ),
                     signature_index=None,
@@ -448,11 +452,11 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
                 request_type=TXFINISHED,
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "02483045022100b7ce2972bcbc3a661fe320ba901e680913b2753fcb47055c9c6ba632fc4acf81022001c3cfd6c2fe92eb60f5176ce0f43707114dd7223da19c56f2df89c13c2fef80012103e7bfe10708f715e8538c92d46ca50db6f657bbc455b7494e6a0303ccdb868b7904ee0900"
                     ),
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100b7ce2972bcbc3a661fe320ba901e680913b2753fcb47055c9c6ba632fc4acf81022001c3cfd6c2fe92eb60f5176ce0f43707114dd7223da19c56f2df89c13c2fef80"
                     ),
                 ),
diff --git a/core/tests/test_apps.bitcoin.sign_tx.writers.py b/core/tests/test_apps.bitcoin.sign_tx.writers.py
index f2588bd5..b412fdde 100644
--- a/core/tests/test_apps.bitcoin.sign_tx.writers.py
+++ b/core/tests/test_apps.bitcoin.sign_tx.writers.py
@@ -12,7 +12,7 @@ class TestWriters(unittest.TestCase):
         inp = TxInput(
             address_n=[0],
             amount=390000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
             ),
             prev_index=0,
@@ -34,13 +34,13 @@ class TestWriters(unittest.TestCase):
         inp = TxInput(
             address_n=[0],
             amount=390000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
             ),
             prev_index=0,
             script_type=InputScriptType.SPENDWITNESS,
             sequence=0xFFFFFFFF,
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac"
             ),
             script_sig=b"0123456789",
diff --git a/core/tests/test_apps.bitcoin.signtx.fee_threshold.py b/core/tests/test_apps.bitcoin.signtx.fee_threshold.py
index b0ef6e57..8b0b27c2 100644
--- a/core/tests/test_apps.bitcoin.signtx.fee_threshold.py
+++ b/core/tests/test_apps.bitcoin.signtx.fee_threshold.py
@@ -48,18 +48,18 @@ class TestSignTxFeeThreshold(unittest.TestCase):
         coin_bitcoin = coins.by_name('Bitcoin')
 
         ptx1 = PrevTx(version=1, lock_time=0, inputs_count=2, outputs_count=1, extra_data_len=0)
-        pinp1 = PrevInput(script_sig=unhexlify('483045022072ba61305fe7cb542d142b8f3299a7b10f9ea61f6ffaab5dca8142601869d53c0221009a8027ed79eb3b9bc13577ac2853269323434558528c6b6a7e542be46e7e9a820141047a2d177c0f3626fc68c53610b0270fa6156181f46586c679ba6a88b34c6f4874686390b4d92e5769fbb89c8050b984f4ec0b257a0e5c4ff8bd3b035a51709503'),
-                            prev_hash=unhexlify('c16a03f1cf8f99f6b5297ab614586cacec784c2d259af245909dedb0e39eddcf'),
+        pinp1 = PrevInput(script_sig=bytes.fromhex('483045022072ba61305fe7cb542d142b8f3299a7b10f9ea61f6ffaab5dca8142601869d53c0221009a8027ed79eb3b9bc13577ac2853269323434558528c6b6a7e542be46e7e9a820141047a2d177c0f3626fc68c53610b0270fa6156181f46586c679ba6a88b34c6f4874686390b4d92e5769fbb89c8050b984f4ec0b257a0e5c4ff8bd3b035a51709503'),
+                            prev_hash=bytes.fromhex('c16a03f1cf8f99f6b5297ab614586cacec784c2d259af245909dedb0e39eddcf'),
                             prev_index=1)
-        pinp2 = PrevInput(script_sig=unhexlify('48304502200fd63adc8f6cb34359dc6cca9e5458d7ea50376cbd0a74514880735e6d1b8a4c0221008b6ead7fe5fbdab7319d6dfede3a0bc8e2a7c5b5a9301636d1de4aa31a3ee9b101410486ad608470d796236b003635718dfc07c0cac0cfc3bfc3079e4f491b0426f0676e6643a39198e8e7bdaffb94f4b49ea21baa107ec2e237368872836073668214'),
-                            prev_hash=unhexlify('1ae39a2f8d59670c8fc61179148a8e61e039d0d9e8ab08610cb69b4a19453eaf'),
+        pinp2 = PrevInput(script_sig=bytes.fromhex('48304502200fd63adc8f6cb34359dc6cca9e5458d7ea50376cbd0a74514880735e6d1b8a4c0221008b6ead7fe5fbdab7319d6dfede3a0bc8e2a7c5b5a9301636d1de4aa31a3ee9b101410486ad608470d796236b003635718dfc07c0cac0cfc3bfc3079e4f491b0426f0676e6643a39198e8e7bdaffb94f4b49ea21baa107ec2e237368872836073668214'),
+                            prev_hash=bytes.fromhex('1ae39a2f8d59670c8fc61179148a8e61e039d0d9e8ab08610cb69b4a19453eaf'),
                             prev_index=1)
-        pout1 = PrevOutput(script_pubkey=unhexlify('76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac'),
+        pout1 = PrevOutput(script_pubkey=bytes.fromhex('76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac'),
                                 amount=390000)
 
         inp1 = TxInput(address_n=[0],  # 14LmW5k4ssUrtbAB4255zdqv3b4w1TuX9e
                            # amount=390000,
-                           prev_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'),
+                           prev_hash=bytes.fromhex('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'),
                            prev_index=0,
                            amount=None)
         out1 = TxOutput(address='1MJ2tj2ThBE62zXbBYA5ZaN3fdve5CPAz1',
@@ -76,13 +76,13 @@ class TestSignTxFeeThreshold(unittest.TestCase):
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
             helpers.UiConfirmForeignAddress(address_n=inp1.address_n),
             True,
-            TxRequest(request_type=TXMETA, details=TxRequestDetailsType(request_index=None, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
+            TxRequest(request_type=TXMETA, details=TxRequestDetailsType(request_index=None, tx_hash=bytes.fromhex('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
             TxAckPrevMeta(tx=ptx1),
-            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
+            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=bytes.fromhex('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
             TxAckPrevInput(tx=TxAckPrevInputWrapper(input=pinp1)),
-            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=1, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
+            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=1, tx_hash=bytes.fromhex('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
             TxAckPrevInput(tx=TxAckPrevInputWrapper(input=pinp2)),
-            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
+            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=bytes.fromhex('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
             TxAckPrevOutput(tx=TxAckPrevOutputWrapper(output=pout1)),
             TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
             TxAckOutput(tx=TxAckOutputWrapper(output=out1)),
@@ -114,27 +114,27 @@ class TestSignTxFeeThreshold(unittest.TestCase):
             version=1, lock_time=0, inputs_count=2, outputs_count=1, extra_data_len=0
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "483045022072ba61305fe7cb542d142b8f3299a7b10f9ea61f6ffaab5dca8142601869d53c0221009a8027ed79eb3b9bc13577ac2853269323434558528c6b6a7e542be46e7e9a820141047a2d177c0f3626fc68c53610b0270fa6156181f46586c679ba6a88b34c6f4874686390b4d92e5769fbb89c8050b984f4ec0b257a0e5c4ff8bd3b035a51709503"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "c16a03f1cf8f99f6b5297ab614586cacec784c2d259af245909dedb0e39eddcf"
             ),
             prev_index=1,
             sequence=0xFFFF_FFFF,
         )
         pinp2 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "48304502200fd63adc8f6cb34359dc6cca9e5458d7ea50376cbd0a74514880735e6d1b8a4c0221008b6ead7fe5fbdab7319d6dfede3a0bc8e2a7c5b5a9301636d1de4aa31a3ee9b101410486ad608470d796236b003635718dfc07c0cac0cfc3bfc3079e4f491b0426f0676e6643a39198e8e7bdaffb94f4b49ea21baa107ec2e237368872836073668214"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "1ae39a2f8d59670c8fc61179148a8e61e039d0d9e8ab08610cb69b4a19453eaf"
             ),
             prev_index=1,
             sequence=0xFFFF_FFFF,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac"
             ),
             amount=390000,
@@ -143,7 +143,7 @@ class TestSignTxFeeThreshold(unittest.TestCase):
         inp1 = TxInput(
             address_n=[0],  # 14LmW5k4ssUrtbAB4255zdqv3b4w1TuX9e
             amount=390000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
             ),
             prev_index=0,
@@ -201,7 +201,7 @@ class TestSignTxFeeThreshold(unittest.TestCase):
                 request_type=TXMETA,
                 details=TxRequestDetailsType(
                     request_index=None,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
                     ),
                 ),
@@ -212,7 +212,7 @@ class TestSignTxFeeThreshold(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
                     ),
                 ),
@@ -223,7 +223,7 @@ class TestSignTxFeeThreshold(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(
                     request_index=1,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
                     ),
                 ),
@@ -234,7 +234,7 @@ class TestSignTxFeeThreshold(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
                     ),
                 ),
@@ -245,7 +245,7 @@ class TestSignTxFeeThreshold(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify("0100000001")
+                    serialized_tx=bytes.fromhex("0100000001")
                 ),
             ),
         ]
diff --git a/core/tests/test_apps.bitcoin.signtx.omni.py b/core/tests/test_apps.bitcoin.signtx.omni.py
index b6893db4..a04a5cc4 100644
--- a/core/tests/test_apps.bitcoin.signtx.omni.py
+++ b/core/tests/test_apps.bitcoin.signtx.omni.py
@@ -16,7 +16,7 @@ class TestSignTxOmni(unittest.TestCase):
             "6f6d6e69000000000000001f0000000020c855": True,
         }
         for k, v in VECTORS.items():
-            k = unhexlify(k)
+            k = bytes.fromhex(k)
             self.assertEqual(is_valid(k), v)
 
     def test_parse(self):
@@ -28,7 +28,7 @@ class TestSignTxOmni(unittest.TestCase):
             "6f6d6e6901000000": "Unknown transaction",
         }
         for k, v in VECTORS.items():
-            k = unhexlify(k)
+            k = bytes.fromhex(k)
             self.assertEqual(parse(k), v)
 
 
diff --git a/core/tests/test_apps.bitcoin.signtx.py b/core/tests/test_apps.bitcoin.signtx.py
index ec3ee428..3c649add 100644
--- a/core/tests/test_apps.bitcoin.signtx.py
+++ b/core/tests/test_apps.bitcoin.signtx.py
@@ -49,27 +49,27 @@ class TestSignTx(unittest.TestCase):
             version=1, lock_time=0, inputs_count=2, outputs_count=1, extra_data_len=0
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "47304402202df6c8885489be0fd52ed1f82c20b4c2c03e479369ea8439ed6233a3bb349ddd02207f749a00dd98d1aca699178d8fa954dc45b9faff33d3c9f03b81fa766061f2d70121038b60c00f69d78f2c5df84a24b30894c3700e4d6176a1f440461c8c69bf1f4262"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "468c0de3bf9dfcc4915354904108611db9547a16ec38a24bf6b240ccc946e0d3"
             ),
             prev_index=0,
             sequence=0xFFFF_FFFF,
         )
         pinp2 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "483045022100b11b3804e9b5fbbad70532e550192b3bbdd65b51f30572638a5559a86600856702204b3bd50a847ddf66426c0f413b9e1a98388b0d36479e66ef37b2d53d9ad13d47012103d443712f673afafafc006ccb6e19220de7ae0c07c9832666103974293d04a93c"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "ebb32bba661e3dccb216acf593de26223f5f2c17f6a75634f2a0b581c4855fa0"
             ),
             prev_index=0,
             sequence=0xFFFF_FFFF,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a914be145c9a7c131ad0c6c9b86f83748d660b42e2f488ac"
             ),
             amount=3_801_747,
@@ -77,7 +77,7 @@ class TestSignTx(unittest.TestCase):
 
         inp1 = TxInput(
             address_n=[44 | 0x80000000, 0 | 0x80000000, 0 | 0x80000000, 0, 10],
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "1f326f65768d55ef146efbb345bd87abe84ac7185726d0457a026fc347a26ef3"
             ),
             prev_index=0,
@@ -137,7 +137,7 @@ class TestSignTx(unittest.TestCase):
                 request_type=TXMETA,
                 details=TxRequestDetailsType(
                     request_index=None,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "1f326f65768d55ef146efbb345bd87abe84ac7185726d0457a026fc347a26ef3"
                     ),
                 ),
@@ -148,7 +148,7 @@ class TestSignTx(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "1f326f65768d55ef146efbb345bd87abe84ac7185726d0457a026fc347a26ef3"
                     ),
                 ),
@@ -159,7 +159,7 @@ class TestSignTx(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(
                     request_index=1,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "1f326f65768d55ef146efbb345bd87abe84ac7185726d0457a026fc347a26ef3"
                     ),
                 ),
@@ -170,7 +170,7 @@ class TestSignTx(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "1f326f65768d55ef146efbb345bd87abe84ac7185726d0457a026fc347a26ef3"
                     ),
                 ),
@@ -181,7 +181,7 @@ class TestSignTx(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify("0100000001")
+                    serialized_tx=bytes.fromhex("0100000001")
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -196,10 +196,10 @@ class TestSignTx(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100bebe58e7eac8170334f987d0f67032a2eddd0e2f378e002502ec88a69460ea460220040a8effc41167f5d5a5ffc77f37317d8125c7cd05f92d142e4d977f2f132c94"
                     ),
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "f36ea247c36f027a45d0265718c74ae8ab87bd45b3fb6e14ef558d76656f321f000000006b483045022100bebe58e7eac8170334f987d0f67032a2eddd0e2f378e002502ec88a69460ea460220040a8effc41167f5d5a5ffc77f37317d8125c7cd05f92d142e4d977f2f132c940121038bac33bcdaeec5626e2f2c5680a9fdc5e551d4e1167f272825bea98e6158d4c8ffffffff01"
                     ),
                 ),
@@ -211,7 +211,7 @@ class TestSignTx(unittest.TestCase):
                 serialized=TxRequestSerializedType(
                     signature_index=None,
                     signature=None,
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "433f3900000000001976a9145d48886f4e2aad3164e55e23a7a41b921646a33488ac00000000"
                     ),
                 ),
diff --git a/core/tests/test_apps.bitcoin.signtx_decred.py b/core/tests/test_apps.bitcoin.signtx_decred.py
index fda79355..f090798d 100644
--- a/core/tests/test_apps.bitcoin.signtx_decred.py
+++ b/core/tests/test_apps.bitcoin.signtx_decred.py
@@ -43,22 +43,26 @@ if (
         version=1, lock_time=0, inputs_count=1, outputs_count=2, extra_data_len=0
     )
     pinp1 = PrevInput(
-        script_sig=unhexlify(
+        script_sig=bytes.fromhex(
             "47304402207d127d59a44187952d9d0de94ad34a19dd9a84beb124fd8a3fb439c862544d3202206618f321385c30bda96fb01ce03f70a269d78a301c0b0c2e3e3689dfae3f4733012102ae1f6b51086bd753f072f94eb8ffe6806d3570c088a3ede46c678b6ea47d1675"
         ),
-        prev_hash=unhexlify(
+        prev_hash=bytes.fromhex(
             "21012b08c5077036460e8f75bbc57beb11d7bc30e7ad224ad5e67d15bd086500"
         ),
         prev_index=2,
         sequence=0xFFFF_FFFF,
     )
     pout1 = PrevOutput(
-        script_pubkey=unhexlify("76a914e4111051ae0349ab5589cf2b7e125c6da694a1a188ac"),
+        script_pubkey=bytes.fromhex(
+            "76a914e4111051ae0349ab5589cf2b7e125c6da694a1a188ac"
+        ),
         amount=153_185_001,
         decred_script_version=0,
     )
     pout2 = PrevOutput(
-        script_pubkey=unhexlify("76a914dc1a98d791735eb9a8715a2a219c23680edcedad88ac"),
+        script_pubkey=bytes.fromhex(
+            "76a914dc1a98d791735eb9a8715a2a219c23680edcedad88ac"
+        ),
         amount=200_000_000,
         decred_script_version=0,
     )
@@ -72,7 +76,7 @@ class TestSignTxDecred(unittest.TestCase):
     def test_one_one_fee(self):
         inp1 = TxInput(
             address_n=[44 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
             ),
             prev_index=1,
@@ -103,7 +107,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify("0100000001")
+                    serialized_tx=bytes.fromhex("0100000001")
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -111,7 +115,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "1064cbf0f0889b919ce083c82065612710b1a6adcdb3f15d7ffc5e6de2cd8a4d0100000000ffffffff01"
                     )
                 ),
@@ -134,7 +138,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "603bea0b0000000000001976a914819d291a2f7fbf770e784bfd78b5ce92c58e95ea88ac0000000000000000"
                     )
                 ),
@@ -144,7 +148,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXMETA,
                 details=TxRequestDetailsType(
                     request_index=None,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
                     ),
                 ),
@@ -155,7 +159,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
                     ),
                 ),
@@ -166,7 +170,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
                     ),
                 ),
@@ -177,7 +181,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(
                     request_index=1,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
                     ),
                 ),
@@ -187,7 +191,7 @@ class TestSignTxDecred(unittest.TestCase):
             TxRequest(
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
-                serialized=TxRequestSerializedType(serialized_tx=unhexlify("01")),
+                serialized=TxRequestSerializedType(serialized_tx=bytes.fromhex("01")),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
             TxRequest(
@@ -195,10 +199,10 @@ class TestSignTxDecred(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=None, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "304402205ea5a0aec7e405eb3c792165f103f61f8ef862e76a2b0146bec1082b243cfbff022061e307113d389b969313bbee2c9a149fad4afdf715e8bd78df579438ef692814"
                     ),
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "00c2eb0b0000000000000000ffffffff6a47304402205ea5a0aec7e405eb3c792165f103f61f8ef862e76a2b0146bec1082b243cfbff022061e307113d389b969313bbee2c9a149fad4afdf715e8bd78df579438ef6928140121030e669acac1f280d1ddf441cd2ba5e97417bf2689e4bbec86df4f831bf9f7ffd0"
                     ),
                 ),
@@ -226,7 +230,7 @@ class TestSignTxDecred(unittest.TestCase):
     def test_purchase_ticket(self):
         inp1 = TxInput(
             address_n=[44 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
             ),
             prev_index=1,
@@ -270,7 +274,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify("0100000001")
+                    serialized_tx=bytes.fromhex("0100000001")
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -278,7 +282,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "1064cbf0f0889b919ce083c82065612710b1a6adcdb3f15d7ffc5e6de2cd8a4d0100000000ffffffff03"
                     )
                 ),
@@ -292,7 +296,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(request_index=1, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "603bea0b0000000000001aba76a914819d291a2f7fbf770e784bfd78b5ce92c58e95ea88ac"
                     )
                 ),
@@ -302,7 +306,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(request_index=2, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "00000000000000000000206a1edc1a98d791735eb9a8715a2a219c23680edcedad00c2eb0b000000000058"
                     )
                 ),
@@ -321,7 +325,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "000000000000000000001abd76a914000000000000000000000000000000000000000088ac0000000000000000"
                     )
                 ),
@@ -331,7 +335,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXMETA,
                 details=TxRequestDetailsType(
                     request_index=None,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
                     ),
                 ),
@@ -342,7 +346,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
                     ),
                 ),
@@ -353,7 +357,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
                     ),
                 ),
@@ -364,7 +368,7 @@ class TestSignTxDecred(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(
                     request_index=1,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "4d8acde26d5efc7f5df1b3cdada6b11027616520c883e09c919b88f0f0cb6410"
                     ),
                 ),
@@ -374,7 +378,7 @@ class TestSignTxDecred(unittest.TestCase):
             TxRequest(
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
-                serialized=TxRequestSerializedType(serialized_tx=unhexlify("01")),
+                serialized=TxRequestSerializedType(serialized_tx=bytes.fromhex("01")),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
             TxRequest(
@@ -382,10 +386,10 @@ class TestSignTxDecred(unittest.TestCase):
                 details=TxRequestDetailsType(),
                 serialized=TxRequestSerializedType(
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "3045022100b3a11ff4befcc035623de7665aaa76dacc9252e53aabf2a5d61238151e696532022004cbcc537c1d539e04c823140bac4524bdba09f528f5c4b76f3f1022b7dc0ad4"
                     ),
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "00c2eb0b0000000000000000ffffffff6b483045022100b3a11ff4befcc035623de7665aaa76dacc9252e53aabf2a5d61238151e696532022004cbcc537c1d539e04c823140bac4524bdba09f528f5c4b76f3f1022b7dc0ad40121030e669acac1f280d1ddf441cd2ba5e97417bf2689e4bbec86df4f831bf9f7ffd0"
                     ),
                 ),
diff --git a/core/tests/test_apps.bitcoin.signtx_grs.py b/core/tests/test_apps.bitcoin.signtx_grs.py
index 15fe027f..988cb435 100644
--- a/core/tests/test_apps.bitcoin.signtx_grs.py
+++ b/core/tests/test_apps.bitcoin.signtx_grs.py
@@ -52,17 +52,17 @@ class TestSignTx_GRS(unittest.TestCase):
             extra_data_len=0,
         )
         pinp1 = PrevInput(
-            script_sig=unhexlify(
+            script_sig=bytes.fromhex(
                 "48304502210096a287593b1212a188e778596eb8ecd4cc169b93a4d115226460d8e3deae431c02206c78ec09b3df977f04a6df5eb53181165c4ea5a0b35f826551349130f879d6b8012102cf5126ff54e38a80a919579d7091cafe24840eab1d30fe2b4d59bdd9d267cad8"
             ),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "7dc74a738c50c2ae1228ce9890841e5355fd6d7f2c1367e0a74403ab60db3224"
             ),
             prev_index=0,
             sequence=4294967294,
         )
         pout1 = PrevOutput(
-            script_pubkey=unhexlify(
+            script_pubkey=bytes.fromhex(
                 "76a914172b4e06e9b7881a48d2ee8062b495d0b2517fe888ac"
             ),
             amount=210016,
@@ -76,7 +76,7 @@ class TestSignTx_GRS(unittest.TestCase):
                 0,
                 2,
             ],  #  FXHDsC5ZqWQHkDmShzgRVZ1MatpWhwxTAA
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a"
             ),
             prev_index=0,
@@ -131,7 +131,7 @@ class TestSignTx_GRS(unittest.TestCase):
                 request_type=TXMETA,
                 details=TxRequestDetailsType(
                     request_index=None,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a"
                     ),
                 ),
@@ -142,7 +142,7 @@ class TestSignTx_GRS(unittest.TestCase):
                 request_type=TXINPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a"
                     ),
                 ),
@@ -153,7 +153,7 @@ class TestSignTx_GRS(unittest.TestCase):
                 request_type=TXOUTPUT,
                 details=TxRequestDetailsType(
                     request_index=0,
-                    tx_hash=unhexlify(
+                    tx_hash=bytes.fromhex(
                         "cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a"
                     ),
                 ),
@@ -168,7 +168,7 @@ class TestSignTx_GRS(unittest.TestCase):
                 serialized=TxRequestSerializedType(
                     signature_index=None,
                     signature=None,
-                    serialized_tx=unhexlify("0100000001"),
+                    serialized_tx=bytes.fromhex("0100000001"),
                 ),
             ),
             TxAckInput(tx=TxAckInputWrapper(input=inp1)),
@@ -183,10 +183,10 @@ class TestSignTx_GRS(unittest.TestCase):
                 details=TxRequestDetailsType(request_index=0, tx_hash=None),
                 serialized=TxRequestSerializedType(
                     signature_index=0,
-                    signature=unhexlify(
+                    signature=bytes.fromhex(
                         "304402201fb96d20d0778f54520ab59afe70d5fb20e500ecc9f02281cf57934e8029e8e10220383d5a3e80f2e1eb92765b6da0f23d454aecbd8236f083d483e9a74302368761"
                     ),
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "4a9d1fdba915e0907ab02f04f88898863112a2b4fdcf872c7414588c47c874cb000000006a47304402201fb96d20d0778f54520ab59afe70d5fb20e500ecc9f02281cf57934e8029e8e10220383d5a3e80f2e1eb92765b6da0f23d454aecbd8236f083d483e9a7430236876101210331693756f749180aeed0a65a0fab0625a2250bd9abca502282a4cf0723152e67ffffffff01"
                     ),
                 ),
@@ -198,7 +198,7 @@ class TestSignTx_GRS(unittest.TestCase):
                 serialized=TxRequestSerializedType(
                     signature_index=None,
                     signature=None,
-                    serialized_tx=unhexlify(
+                    serialized_tx=bytes.fromhex(
                         "a0330300000000001976a914fe40329c95c5598ac60752a5310b320cb52d18e688ac00000000"
                     ),
                 ),
diff --git a/core/tests/test_apps.bitcoin.txweight.py b/core/tests/test_apps.bitcoin.txweight.py
index 229b5bd0..69342a9c 100644
--- a/core/tests/test_apps.bitcoin.txweight.py
+++ b/core/tests/test_apps.bitcoin.txweight.py
@@ -22,7 +22,7 @@ class TestCalculateTxWeight(unittest.TestCase):
         inp1 = TxInput(
             address_n=[0],  # 14LmW5k4ssUrtbAB4255zdqv3b4w1TuX9e
             # amount=390000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
             ),
             prev_index=0,
@@ -58,7 +58,7 @@ class TestCalculateTxWeight(unittest.TestCase):
             # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
             amount=123456789,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337"
             ),
             prev_index=0,
@@ -99,7 +99,7 @@ class TestCalculateTxWeight(unittest.TestCase):
             # 49'/1'/0'/0/0" - tb1qqzv60m9ajw8drqulta4ld4gfx0rdh82un5s65s
             address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
             amount=12300000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "09144602765ce3dd8f4329445b20e3684e948709c5cdcaf12da3bb079c99448a"
             ),
             prev_index=0,
@@ -138,7 +138,7 @@ class TestCalculateTxWeight(unittest.TestCase):
         inp1 = TxInput(
             address_n=[86 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
             amount=4600,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "7956f1de3e7362b04115b64a31f0b6822c50dd6c08d78398f392a0ac3f0e357b"
             ),
             prev_index=1,
@@ -185,7 +185,7 @@ class TestCalculateTxWeight(unittest.TestCase):
         inp1 = TxInput(
             address_n=[48 | 0x80000000, 0 | 0x80000000, 1 | 0x80000000, 0, 0],
             amount=100000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "c6091adf4c0c23982a35899a6e58ae11e703eacd7954f588ed4b9cdefc4dba52"
             ),
             prev_index=1,
@@ -232,7 +232,7 @@ class TestCalculateTxWeight(unittest.TestCase):
 
         inp1 = TxInput(
             address_n=[49 | 0x80000000, 1 | 0x80000000, 1 | 0x80000000, 0, 0],
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "c9348040bbc2024e12dcb4a0b4806b0398646b91acf314da028c3f03dd0179fc"
             ),
             prev_index=1,
@@ -260,7 +260,7 @@ class TestCalculateTxWeight(unittest.TestCase):
         inp1 = TxInput(
             address_n=[49 | 0x80000000, 1 | 0x80000000, 1 | 0x80000000, 0, 0],
             amount=20000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "8c3ea7a10ab6d289119b722ec8c27b70c17c722334ced31a0370d782e4b6775d"
             ),
             prev_index=0,
@@ -269,7 +269,7 @@ class TestCalculateTxWeight(unittest.TestCase):
         inp2 = TxInput(
             address_n=[84 | 0x80000000, 1 | 0x80000000, 1 | 0x80000000, 0, 0],
             amount=15000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "7956f1de3e7362b04115b64a31f0b6822c50dd6c08d78398f392a0ac3f0e357b"
             ),
             prev_index=0,
@@ -278,7 +278,7 @@ class TestCalculateTxWeight(unittest.TestCase):
         inp3 = TxInput(
             address_n=[86 | 0x80000000, 1 | 0x80000000, 1 | 0x80000000, 0, 0],
             amount=4450,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "7956f1de3e7362b04115b64a31f0b6822c50dd6c08d78398f392a0ac3f0e357b"
             ),
             prev_index=0,
@@ -287,7 +287,7 @@ class TestCalculateTxWeight(unittest.TestCase):
         inp4 = TxInput(
             address_n=[44 | 0x80000000, 1 | 0x80000000, 1 | 0x80000000, 0, 0],
             amount=10000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "3ac32e90831d79385eee49d6030a2123cd9d009fe8ffc3d470af9a6a777a119b"
             ),
             prev_index=2,
@@ -341,20 +341,20 @@ class TestCalculateTxWeight(unittest.TestCase):
 
         inp1 = TxInput(
             amount=100000,
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "e5b7e21b5ba720e81efd6bfa9f854ababdcddc75a43bfa60bf0fe069cfd1bb8a"
             ),
             prev_index=0,
             script_type=InputScriptType.EXTERNAL,
-            script_pubkey=unhexlify("00149c02608d469160a92f40fdf8c6ccced029493088"),
-            ownership_proof=unhexlify(
+            script_pubkey=bytes.fromhex("00149c02608d469160a92f40fdf8c6ccced029493088"),
+            ownership_proof=bytes.fromhex(
                 "534c001900016b2055d8190244b2ed2d46513c40658a574d3bc2deb6969c0535bb818b44d2c40002483045022100d4ad0374c922848c71d913fba59c81b9075e0d33e884d953f0c4b4806b8ffd0c022024740e6717a2b6a5aa03148c3a28b02c713b4e30fc8aeae67fa69eb20e8ddcd9012103505f0d82bbdd251511591b34f36ad5eea37d3220c2b81a1189084431ddb3aa3d"
             ),
         )
 
         inp2 = TxInput(
             address_n=[84 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "70f9871eb03a38405cfd7a01e0e1448678132d815e2c9f552ad83ae23969509e"
             ),
             prev_index=0,
@@ -365,15 +365,15 @@ class TestCalculateTxWeight(unittest.TestCase):
         inp3 = TxInput(
             # tb1qldlynaqp0hy4zc2aag3pkenzvxy65saesxw3wd
             # address_n=parse_path("m/84h/1h/0h/0/1"),
-            prev_hash=unhexlify(
+            prev_hash=bytes.fromhex(
                 "65b768dacccfb209eebd95a1fb80a04f1dd6a3abc6d7b41d5e9d9f91605b37d9"
             ),
             prev_index=0,
             amount=10000,
             script_type=InputScriptType.EXTERNAL,
-            script_pubkey=unhexlify("0014fb7e49f4017dc951615dea221b66626189aa43b9"),
+            script_pubkey=bytes.fromhex("0014fb7e49f4017dc951615dea221b66626189aa43b9"),
             script_sig=bytes(0),
-            witness=unhexlify(
+            witness=bytes.fromhex(
                 "024730440220432ac60461de52713ad543cbb1484f7eca1a72c615d539b3f42f5668da4501d2022063786a6d6940a5c1ed9c2d2fd02cef90b6c01ddd84829c946561e15be6c0aae1012103dcf3bc936ecb2ec57b8f468050abce8c8756e75fd74273c9977744b1a0be7d03"
             ),
         )
diff --git a/core/tests/test_apps.bitcoin.zcash.zip243.py b/core/tests/test_apps.bitcoin.zcash.zip243.py
index b6d1f48a..32d9aba1 100644
--- a/core/tests/test_apps.bitcoin.zcash.zip243.py
+++ b/core/tests/test_apps.bitcoin.zcash.zip243.py
@@ -38,10 +38,10 @@ class TestZcashZip243(unittest.TestCase):
             "version": 4,
             "version_group_id": 0x892F2085,
             "branch_id": 0x76B809BB,
-            "prevouts_hash": b"bd4318eecf841a0cf01c2be532cf4bc3303e881e2aface159f1882f153152688",
-            "sequence_hash": b"9ac6a31952ff626bf5a0a30d3d8ac63a0d4298d33d7bc38854bfa5860695e30a",
-            "outputs_hash": b"d0cadf116b4441f5e1e17814908dee509ec262a79f3c88f7f3389e8200658992",
-            "preimage_hash": b"f8772c6ecf9d903698fb8c51cd7b99605af298478989945936935da65e064695",
+            "prevouts_hash": "bd4318eecf841a0cf01c2be532cf4bc3303e881e2aface159f1882f153152688",
+            "sequence_hash": "9ac6a31952ff626bf5a0a30d3d8ac63a0d4298d33d7bc38854bfa5860695e30a",
+            "outputs_hash": "d0cadf116b4441f5e1e17814908dee509ec262a79f3c88f7f3389e8200658992",
+            "preimage_hash": "f8772c6ecf9d903698fb8c51cd7b99605af298478989945936935da65e064695",
         },
         {
             "expiry": 231041495,
@@ -75,10 +75,10 @@ class TestZcashZip243(unittest.TestCase):
             "version": 4,
             "version_group_id": 0x892F2085,
             "branch_id": 0x76B809BB,
-            "prevouts_hash": b"8e286c6c0dde3119271c9c1398ef46614b0253c502b00a3691cec2e9047da35b",
-            "sequence_hash": b"58477fd9ecd5faf3e08159e0ab5fdaab66cab364d081498ddcef41de0af3624e",
-            "outputs_hash": b"c518797fc6f2c08fc22aa3f66122047b360e1db4df5c3feb28573c00cdf45fa1",
-            "preimage_hash": b"0eb47dc51d89cc52378fc182242f78ebd3609544a365d2270c23b4052f301025",
+            "prevouts_hash": "8e286c6c0dde3119271c9c1398ef46614b0253c502b00a3691cec2e9047da35b",
+            "sequence_hash": "58477fd9ecd5faf3e08159e0ab5fdaab66cab364d081498ddcef41de0af3624e",
+            "outputs_hash": "c518797fc6f2c08fc22aa3f66122047b360e1db4df5c3feb28573c00cdf45fa1",
+            "preimage_hash": "0eb47dc51d89cc52378fc182242f78ebd3609544a365d2270c23b4052f301025",
         },
         {
             "expiry": 186996458,
@@ -99,10 +99,10 @@ class TestZcashZip243(unittest.TestCase):
             "version": 4,
             "version_group_id": 0x892F2085,
             "branch_id": 0x76B809BB,
-            "prevouts_hash": b"445bc6328cd33b3c86259953dd674bded341ff1e1104dc21856919e9761036dd",
-            "sequence_hash": b"42e1d5c2636f165afaa954afa6d7a50779eb145e947bf668f1a40dd771c711fc",
-            "outputs_hash": b"869eda84eecf7257f9979a4848bbf52f4969a5736594ab7ba41452e7bb906824",
-            "preimage_hash": b"7f6b5439a64b20faf6f9f9460bc75c333c4799e9b04c80c26a79b8e801b8b6e1",
+            "prevouts_hash": "445bc6328cd33b3c86259953dd674bded341ff1e1104dc21856919e9761036dd",
+            "sequence_hash": "42e1d5c2636f165afaa954afa6d7a50779eb145e947bf668f1a40dd771c711fc",
+            "outputs_hash": "869eda84eecf7257f9979a4848bbf52f4969a5736594ab7ba41452e7bb906824",
+            "preimage_hash": "7f6b5439a64b20faf6f9f9460bc75c333c4799e9b04c80c26a79b8e801b8b6e1",
         },
         {
             "expiry": 254788522,
@@ -135,10 +135,10 @@ class TestZcashZip243(unittest.TestCase):
             "version": 4,
             "version_group_id": 0x892F2085,
             "branch_id": 0x76B809BB,
-            "prevouts_hash": b"509abdfafcc75265037f1ce6a4658ac9ecadd7b82378c3fbaeb48ab437ff6898",
-            "sequence_hash": b"2b13f671cd1a9aa04c1e250eef74a316d7d2b049360d20604514ddc2dfacfd23",
-            "outputs_hash": b"4f01b8785e80779290aa86c16b24952f9b7f8bc09da44e68f760ab1920ab8f2a",
-            "preimage_hash": b"46152b79ebeba4089d05724e33d4a5e6d6ea9e3a2fe777af6644318ba93a1ca0",
+            "prevouts_hash": "509abdfafcc75265037f1ce6a4658ac9ecadd7b82378c3fbaeb48ab437ff6898",
+            "sequence_hash": "2b13f671cd1a9aa04c1e250eef74a316d7d2b049360d20604514ddc2dfacfd23",
+            "outputs_hash": "4f01b8785e80779290aa86c16b24952f9b7f8bc09da44e68f760ab1920ab8f2a",
+            "preimage_hash": "46152b79ebeba4089d05724e33d4a5e6d6ea9e3a2fe777af6644318ba93a1ca0",
         },
         # "Test vector 3" from https://github.com/zcash/zips/blob/master/zip-0243.rst
         {
@@ -169,10 +169,10 @@ class TestZcashZip243(unittest.TestCase):
             "version": 4,
             "version_group_id": 0x892F2085,
             "branch_id": 0x76B809BB,
-            "prevouts_hash": b"fae31b8dec7b0b77e2c8d6b6eb0e7e4e55abc6574c26dd44464d9408a8e33f11",
-            "sequence_hash": b"6c80d37f12d89b6f17ff198723e7db1247c4811d1a695d74d930f99e98418790",
-            "outputs_hash": b"d2b04118469b7810a0d1cc59568320aad25a84f407ecac40b4f605a4e6868454",
-            "preimage_hash": b"6c210ce6417539d4aa9546f6184e33ca89224ac4559d2a9c4cf090b646692bd9",
+            "prevouts_hash": "fae31b8dec7b0b77e2c8d6b6eb0e7e4e55abc6574c26dd44464d9408a8e33f11",
+            "sequence_hash": "6c80d37f12d89b6f17ff198723e7db1247c4811d1a695d74d930f99e98418790",
+            "outputs_hash": "d2b04118469b7810a0d1cc59568320aad25a84f407ecac40b4f605a4e6868454",
+            "preimage_hash": "6c210ce6417539d4aa9546f6184e33ca89224ac4559d2a9c4cf090b646692bd9",
         },
     ]
 
@@ -196,7 +196,7 @@ class TestZcashZip243(unittest.TestCase):
             for i in v["inputs"]:
                 txi = TxInput(
                     amount=i["amount"],
-                    prev_hash=unhexlify(i["prevout"][0]),
+                    prev_hash=bytes.fromhex(i["prevout"][0]),
                     prev_index=i["prevout"][1],
                     script_type=i["script_type"],
                     sequence=i["sequence"],
@@ -206,28 +206,22 @@ class TestZcashZip243(unittest.TestCase):
             for o in v["outputs"]:
                 txo = PrevOutput(
                     amount=o["amount"],
-                    script_pubkey=unhexlify(o["script_pubkey"]),
+                    script_pubkey=bytes.fromhex(o["script_pubkey"]),
                 )
                 zip243.add_output(txo, txo.script_pubkey)
 
+            self.assertEqual(get_tx_hash(zip243.h_prevouts).hex(), v["prevouts_hash"])
+            self.assertEqual(get_tx_hash(zip243.h_sequence).hex(), v["sequence_hash"])
+            self.assertEqual(get_tx_hash(zip243.h_outputs).hex(), v["outputs_hash"])
             self.assertEqual(
-                hexlify(get_tx_hash(zip243.h_prevouts)), v["prevouts_hash"]
-            )
-            self.assertEqual(
-                hexlify(get_tx_hash(zip243.h_sequence)), v["sequence_hash"]
-            )
-            self.assertEqual(hexlify(get_tx_hash(zip243.h_outputs)), v["outputs_hash"])
-            self.assertEqual(
-                hexlify(
-                    zip243.hash143(
-                        txi,
-                        [unhexlify(i["pubkey"])],
-                        1,
-                        tx,
-                        coin,
-                        SigHashType.SIGHASH_ALL,
-                    )
-                ),
+                zip243.hash143(
+                    txi,
+                    [bytes.fromhex(i["pubkey"])],
+                    1,
+                    tx,
+                    coin,
+                    SigHashType.SIGHASH_ALL,
+                ).hex(),
                 v["preimage_hash"],
             )
 
diff --git a/core/tests/test_apps.cardano.address.py b/core/tests/test_apps.cardano.address.py
index 63dc5001..2591e28e 100644
--- a/core/tests/test_apps.cardano.address.py
+++ b/core/tests/test_apps.cardano.address.py
@@ -61,22 +61,22 @@ class TestCardanoAddress(unittest.TestCase):
 
         nodes = [
             (
-                b"3881a8de77d069001010d7f7d5211552e7d539b0e253add710367f95e528ed51",
-                b"9b77608b38e0a0c7861aa234557c81482f42aae2d17993a8ddaec1868fb04d60",
-                b"a938c8554ae04616cfaae7cd0eb557475082c4e910242ce774967e0bd7492408",
-                b"cbf6ab47c8eb1a0477fc40b25dbb6c4a99454edb97d6fe5acedd3e238ef46fe0",
+                "3881a8de77d069001010d7f7d5211552e7d539b0e253add710367f95e528ed51",
+                "9b77608b38e0a0c7861aa234557c81482f42aae2d17993a8ddaec1868fb04d60",
+                "a938c8554ae04616cfaae7cd0eb557475082c4e910242ce774967e0bd7492408",
+                "cbf6ab47c8eb1a0477fc40b25dbb6c4a99454edb97d6fe5acedd3e238ef46fe0",
             ),
             (
-                b"3003aca659846540b9ed04f2b844f2d8ea964856ca38a7dffedef4f6e528ed51",
-                b"8844ccc81d633e1c7126f30c2524c1652617cf58da755014070215bf5070ba38",
-                b"be28c00ed6cb9b70310f78028f8e3a2db935baf482d84afa590b0b5b864571cc",
-                b"584b4631d752023a249e980779517280e6c0b3ac7a7f27c6e9456bfd228ca60b",
+                "3003aca659846540b9ed04f2b844f2d8ea964856ca38a7dffedef4f6e528ed51",
+                "8844ccc81d633e1c7126f30c2524c1652617cf58da755014070215bf5070ba38",
+                "be28c00ed6cb9b70310f78028f8e3a2db935baf482d84afa590b0b5b864571cc",
+                "584b4631d752023a249e980779517280e6c0b3ac7a7f27c6e9456bfd228ca60b",
             ),
             (
-                b"68e4482add0a741e14c8f2306bf83206a623e3729dd24175915eedece428ed51",
-                b"3165a80c5efe846224d46a0427cdb2be4f31ea3585c51f4131faefc4328ad95a",
-                b"9a32499976ffb582daa9988dfc42a303de5ed00c320c929f496be3c6eb1cf405",
-                b"da07ca30a3d1c5fe3c34ce5fa197722446a646624a10bdf8889a4b9c347b2ef2",
+                "68e4482add0a741e14c8f2306bf83206a623e3729dd24175915eedece428ed51",
+                "3165a80c5efe846224d46a0427cdb2be4f31ea3585c51f4131faefc4328ad95a",
+                "9a32499976ffb582daa9988dfc42a303de5ed00c320c929f496be3c6eb1cf405",
+                "da07ca30a3d1c5fe3c34ce5fa197722446a646624a10bdf8889a4b9c347b2ef2",
             ),
         ]
 
@@ -84,10 +84,10 @@ class TestCardanoAddress(unittest.TestCase):
             n = self.keychain.derive(
                 [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, 0x80000000 + i]
             )
-            self.assertEqual(hexlify(n.private_key()), priv)
-            self.assertEqual(hexlify(n.private_key_ext()), ext)
-            self.assertEqual(hexlify(seed.remove_ed25519_prefix(n.public_key())), pub)
-            self.assertEqual(hexlify(n.chain_code()), chain)
+            self.assertEqual(n.private_key().hex(), priv)
+            self.assertEqual(n.private_key_ext().hex(), ext)
+            self.assertEqual(seed.remove_ed25519_prefix(n.public_key()).hex(), pub)
+            self.assertEqual(n.chain_code().hex(), chain)
 
     def test_non_hardened_address_derivation_scheme(self):
         addresses = [
@@ -112,22 +112,22 @@ class TestCardanoAddress(unittest.TestCase):
 
         nodes = [
             (
-                b"d03ba81163fd55af97bd132bf651a0da5b5e6201b15b1caca60b0be8e028ed51",
-                b"493f44aa8d25fe0d3fe2935c76ea6b3e9e41c79e9dbcbe7131357c5aa1b6cac5",
-                b"b90fb812a2268e9569ff1172e8daed1da3dc7e72c7bded7c5bcb7282039f90d5",
-                b"fd8e71c1543de2cdc7f7623130c5f2cceb53549055fa1f5bc88199989e08cce7",
+                "d03ba81163fd55af97bd132bf651a0da5b5e6201b15b1caca60b0be8e028ed51",
+                "493f44aa8d25fe0d3fe2935c76ea6b3e9e41c79e9dbcbe7131357c5aa1b6cac5",
+                "b90fb812a2268e9569ff1172e8daed1da3dc7e72c7bded7c5bcb7282039f90d5",
+                "fd8e71c1543de2cdc7f7623130c5f2cceb53549055fa1f5bc88199989e08cce7",
             ),
             (
-                b"08b6438c8dd49d34b71c8e914d6ac3184e5ab3dcc8af023d08503a7edf28ed51",
-                b"3fee605fdfaddc1ee2ea0b246b02c9abc54ad741054bc83943e8b21487b5a053",
-                b"89053545a6c254b0d9b1464e48d2b5fcf91d4e25c128afb1fcfc61d0843338ea",
-                b"26308151516f3b0e02bb1638142747863c520273ce9bd3e5cd91e1d46fe2a635",
+                "08b6438c8dd49d34b71c8e914d6ac3184e5ab3dcc8af023d08503a7edf28ed51",
+                "3fee605fdfaddc1ee2ea0b246b02c9abc54ad741054bc83943e8b21487b5a053",
+                "89053545a6c254b0d9b1464e48d2b5fcf91d4e25c128afb1fcfc61d0843338ea",
+                "26308151516f3b0e02bb1638142747863c520273ce9bd3e5cd91e1d46fe2a635",
             ),
             (
-                b"088f0275bf4a1bd18f08d7ef06c6ddb6ce7e3dc415fb4e89fe21bf39e628ed51",
-                b"4c44563c7df519ea9b4d1801c1ab98b449db28b87f1c3837759c20f68c4c1e65",
-                b"52548cb98e6f46a592bdf7f3598a9abc0126c78dfa3f46d1894ee52a5213e833",
-                b"91af0668ee449e613e61bbb2482e5ddee1d9b15785727ec3e362c36861bff923",
+                "088f0275bf4a1bd18f08d7ef06c6ddb6ce7e3dc415fb4e89fe21bf39e628ed51",
+                "4c44563c7df519ea9b4d1801c1ab98b449db28b87f1c3837759c20f68c4c1e65",
+                "52548cb98e6f46a592bdf7f3598a9abc0126c78dfa3f46d1894ee52a5213e833",
+                "91af0668ee449e613e61bbb2482e5ddee1d9b15785727ec3e362c36861bff923",
             ),
         ]
 
@@ -135,10 +135,10 @@ class TestCardanoAddress(unittest.TestCase):
             n = self.keychain.derive(
                 [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, i]
             )
-            self.assertEqual(hexlify(n.private_key()), priv)
-            self.assertEqual(hexlify(n.private_key_ext()), ext)
-            self.assertEqual(hexlify(seed.remove_ed25519_prefix(n.public_key())), pub)
-            self.assertEqual(hexlify(n.chain_code()), chain)
+            self.assertEqual(n.private_key().hex(), priv)
+            self.assertEqual(n.private_key_ext().hex(), ext)
+            self.assertEqual(seed.remove_ed25519_prefix(n.public_key()).hex(), pub)
+            self.assertEqual(n.chain_code().hex(), chain)
 
     def test_root_address_derivation_scheme(self):
         # 44'/1815'
@@ -157,17 +157,17 @@ class TestCardanoAddress(unittest.TestCase):
         )
 
         priv, ext, pub, chain = (
-            b"204ec79cbb6502a141de60d274962010c7f1c94a2987b26506433184d228ed51",
-            b"975cdd1c8610b44701567f05934c45c8716064263ccfe72ed2167ccb705c09b6",
-            b"8c47ebce34234d04fd3dfbac33feaba6133e4e3d77c4b5ab18120ec6878ad4ce",
-            b"02ac67c59a8b0264724a635774ca2c242afa10d7ab70e2bf0a8f7d4bb10f1f7a",
+            "204ec79cbb6502a141de60d274962010c7f1c94a2987b26506433184d228ed51",
+            "975cdd1c8610b44701567f05934c45c8716064263ccfe72ed2167ccb705c09b6",
+            "8c47ebce34234d04fd3dfbac33feaba6133e4e3d77c4b5ab18120ec6878ad4ce",
+            "02ac67c59a8b0264724a635774ca2c242afa10d7ab70e2bf0a8f7d4bb10f1f7a",
         )
 
         n = self.keychain.derive([0x80000000 | 44, 0x80000000 | 1815])
-        self.assertEqual(hexlify(n.private_key()), priv)
-        self.assertEqual(hexlify(n.private_key_ext()), ext)
-        self.assertEqual(hexlify(seed.remove_ed25519_prefix(n.public_key())), pub)
-        self.assertEqual(hexlify(n.chain_code()), chain)
+        self.assertEqual(n.private_key().hex(), priv)
+        self.assertEqual(n.private_key_ext().hex(), ext)
+        self.assertEqual(seed.remove_ed25519_prefix(n.public_key()).hex(), pub)
+        self.assertEqual(n.chain_code().hex(), chain)
 
     def test_address_hash(self):
         data = [
@@ -203,17 +203,15 @@ class TestCardanoAddress(unittest.TestCase):
         node = cardano.from_seed_slip23(master_secret)
 
         # Check root node.
-        root_priv = b"c0fe4a6973df4de06262693fc9186f71faf292960350882d49456bf108d13954"
-        root_ext = b"4064253ffefc4127489bce1b825a47329010c5afb4d21154ef949ef786204405"
-        root_pub = b"83e3ecaf57f90f022c45e10d1b8cb78499c30819515ad9a81ad82139fdb12a90"
-        root_chain = b"22c12755afdd192742613b3062069390743ea232bc1b366c8f41e37292af9305"
+        root_priv = "c0fe4a6973df4de06262693fc9186f71faf292960350882d49456bf108d13954"
+        root_ext = "4064253ffefc4127489bce1b825a47329010c5afb4d21154ef949ef786204405"
+        root_pub = "83e3ecaf57f90f022c45e10d1b8cb78499c30819515ad9a81ad82139fdb12a90"
+        root_chain = "22c12755afdd192742613b3062069390743ea232bc1b366c8f41e37292af9305"
 
-        self.assertEqual(hexlify(node.private_key()), root_priv)
-        self.assertEqual(hexlify(node.private_key_ext()), root_ext)
-        self.assertEqual(
-            hexlify(seed.remove_ed25519_prefix(node.public_key())), root_pub
-        )
-        self.assertEqual(hexlify(node.chain_code()), root_chain)
+        self.assertEqual(node.private_key().hex(), root_priv)
+        self.assertEqual(node.private_key_ext().hex(), root_ext)
+        self.assertEqual(seed.remove_ed25519_prefix(node.public_key()).hex(), root_pub)
+        self.assertEqual(node.chain_code().hex(), root_chain)
 
         # Check derived nodes and addresses.
         keychain = Keychain(node)
@@ -221,24 +219,24 @@ class TestCardanoAddress(unittest.TestCase):
         nodes = [
             (
                 "Ae2tdPwUPEYxF9NAMNdd3v2LZoMeWp7gCZiDb6bZzFQeeVASzoP7HC4V9s6",
-                b"e0acfe234aa6e1219ce7d3d8d91853e0808bab92ecb8a0ff0f345ff31ad13954",
-                b"ff89dc71365c4b67bb7bb75d566e65b8a95f16e4d70cce51c25937db15614530",
-                b"bc043d84b8b891d49890edb6aced6f2d78395f255c5b6aea8878b913f83e8579",
-                b"dc3f0d2b5cccb822335ef6213fd133f4ca934151ec44a6000aee43b8a101078c",
+                "e0acfe234aa6e1219ce7d3d8d91853e0808bab92ecb8a0ff0f345ff31ad13954",
+                "ff89dc71365c4b67bb7bb75d566e65b8a95f16e4d70cce51c25937db15614530",
+                "bc043d84b8b891d49890edb6aced6f2d78395f255c5b6aea8878b913f83e8579",
+                "dc3f0d2b5cccb822335ef6213fd133f4ca934151ec44a6000aee43b8a101078c",
             ),
             (
                 "Ae2tdPwUPEZ1TjYcvfkWAbiHtGVxv4byEHHZoSyQXjPJ362DifCe1ykgqgy",
-                b"d0ce3e7a6445bc91801319b9bbaf47fdfca9364257295fb13bc5046a20d13954",
-                b"c800359abdc875944754ae7368bab7ef75184d48816c368f5a28af4bcf1d1ee8",
-                b"24c4fe188a39103db88818bc191fd8571eae7b284ebcbdf2462bde97b058a95c",
-                b"6f7a744035f4b3ddb8f861c18446169643cc3ae85e271b4b4f0eda05cf84c65b",
+                "d0ce3e7a6445bc91801319b9bbaf47fdfca9364257295fb13bc5046a20d13954",
+                "c800359abdc875944754ae7368bab7ef75184d48816c368f5a28af4bcf1d1ee8",
+                "24c4fe188a39103db88818bc191fd8571eae7b284ebcbdf2462bde97b058a95c",
+                "6f7a744035f4b3ddb8f861c18446169643cc3ae85e271b4b4f0eda05cf84c65b",
             ),
             (
                 "Ae2tdPwUPEZGXmSbda1kBNfyhRQGRcQxJFdk7mhWZXAGnapyejv2b2U3aRb",
-                b"e8320644cce22a6e9fc33865fc5a598b1cda061c47a548aead3af4ed1cd13954",
-                b"9e2ece5d7fe8119cb76090009be926a84fc5d3b95855b5962ffe2f880836cf09",
-                b"831a63d381a8dab1e6e1ee991a4300fc70687aae5f97f4fcf92ed1b6c2bd99de",
-                b"672d6af4707aba201b7940231e83dd357f92f8851b3dfdc224ef311e1b64cdeb",
+                "e8320644cce22a6e9fc33865fc5a598b1cda061c47a548aead3af4ed1cd13954",
+                "9e2ece5d7fe8119cb76090009be926a84fc5d3b95855b5962ffe2f880836cf09",
+                "831a63d381a8dab1e6e1ee991a4300fc70687aae5f97f4fcf92ed1b6c2bd99de",
+                "672d6af4707aba201b7940231e83dd357f92f8851b3dfdc224ef311e1b64cdeb",
             ),
         ]
 
@@ -256,10 +254,10 @@ class TestCardanoAddress(unittest.TestCase):
             )
             n = keychain.derive([0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, i])
             self.assertEqual(a, address)
-            self.assertEqual(hexlify(n.private_key()), priv)
-            self.assertEqual(hexlify(n.private_key_ext()), ext)
-            self.assertEqual(hexlify(seed.remove_ed25519_prefix(n.public_key())), pub)
-            self.assertEqual(hexlify(n.chain_code()), chain)
+            self.assertEqual(n.private_key().hex(), priv)
+            self.assertEqual(n.private_key_ext().hex(), ext)
+            self.assertEqual(seed.remove_ed25519_prefix(n.public_key()).hex(), pub)
+            self.assertEqual(n.chain_code().hex(), chain)
 
     def test_slip39_256(self):
         mnemonics = [
@@ -279,17 +277,15 @@ class TestCardanoAddress(unittest.TestCase):
         node = cardano.from_seed_slip23(master_secret)
 
         # Check root node.
-        root_priv = b"90633724b5daf770a8b420b8658e7d8bc21e066b60ec8cd4d5730681cc294e4f"
-        root_ext = b"f9d99bf3cd9c7e12663e8646afa40cb3aecf15d91f2abc15d21056c6bccb3414"
-        root_pub = b"eea170f0ef97b59d22907cb429888029721ed67d3e7a1b56b81731086ab7db64"
-        root_chain = b"04f1de750b62725fcc1ae1b93ca4063acb53c486b959cadaa100ebd7828e5460"
+        root_priv = "90633724b5daf770a8b420b8658e7d8bc21e066b60ec8cd4d5730681cc294e4f"
+        root_ext = "f9d99bf3cd9c7e12663e8646afa40cb3aecf15d91f2abc15d21056c6bccb3414"
+        root_pub = "eea170f0ef97b59d22907cb429888029721ed67d3e7a1b56b81731086ab7db64"
+        root_chain = "04f1de750b62725fcc1ae1b93ca4063acb53c486b959cadaa100ebd7828e5460"
 
-        self.assertEqual(hexlify(node.private_key()), root_priv)
-        self.assertEqual(hexlify(node.private_key_ext()), root_ext)
-        self.assertEqual(
-            hexlify(seed.remove_ed25519_prefix(node.public_key())), root_pub
-        )
-        self.assertEqual(hexlify(node.chain_code()), root_chain)
+        self.assertEqual(node.private_key().hex(), root_priv)
+        self.assertEqual(node.private_key_ext().hex(), root_ext)
+        self.assertEqual(seed.remove_ed25519_prefix(node.public_key()).hex(), root_pub)
+        self.assertEqual(node.chain_code().hex(), root_chain)
 
         # Check derived nodes and addresses.
         keychain = Keychain(node)
@@ -297,24 +293,24 @@ class TestCardanoAddress(unittest.TestCase):
         nodes = [
             (
                 "Ae2tdPwUPEYyDD1C2FbVJFAE3FuAxLspfMYt29TJ1urnSKr57cVhEcioSCC",
-                b"38e8a4b17ca07b6a309f1cee83f87593e34a1fc3a289785ea451ef65df294e4f",
-                b"405d10ef71c2b0019250d11837de8db825d8556bf1e57f8866920af6d8c90002",
-                b"967a9a041ad1379e31c2c7f2aa4bc2b3f7769341c0ea89ccfb12a904f2e10877",
-                b"7b15d8d9006afe3cd7e04f375a1126a8c7c7c07c59a6f0c5b0310f4245f4edbb",
+                "38e8a4b17ca07b6a309f1cee83f87593e34a1fc3a289785ea451ef65df294e4f",
+                "405d10ef71c2b0019250d11837de8db825d8556bf1e57f8866920af6d8c90002",
+                "967a9a041ad1379e31c2c7f2aa4bc2b3f7769341c0ea89ccfb12a904f2e10877",
+                "7b15d8d9006afe3cd7e04f375a1126a8c7c7c07c59a6f0c5b0310f4245f4edbb",
             ),
             (
                 "Ae2tdPwUPEZHJGtyz47F6wD7qAegt1JNRJWuiE36QLvFzeqJPBZ2EBvhr8M",
-                b"a09f90e3f76a7bdb7f8721cc0c142dbd6398fd704b83455e123fa886dc294e4f",
-                b"917e4166bb404def9f12634e84ecbcb98afdea051ba7c38745e208178a9e9baf",
-                b"6f3805bbc1b7a75afa95dffec331671f3c4662800615e80d2ec1202a9d874c86",
-                b"44baf30fd549e6a1e05f99c2a2c8971aea8894ee8d9c5fc2c5ae6ee839a56b2d",
+                "a09f90e3f76a7bdb7f8721cc0c142dbd6398fd704b83455e123fa886dc294e4f",
+                "917e4166bb404def9f12634e84ecbcb98afdea051ba7c38745e208178a9e9baf",
+                "6f3805bbc1b7a75afa95dffec331671f3c4662800615e80d2ec1202a9d874c86",
+                "44baf30fd549e6a1e05f99c2a2c8971aea8894ee8d9c5fc2c5ae6ee839a56b2d",
             ),
             (
                 "Ae2tdPwUPEYxD9xNPBJTzYmtFVVWEPB6KW4TCDijQ4pDwU11wt5621PyCi4",
-                b"78dd824aea33bed5c1502d1a17f11a4adbe923aac1cd1f7ae98c9506db294e4f",
-                b"ddfe7f27e2894b983df773d8ac2a07973fc37ff36e93a2f2d71fb7327d4e18f4",
-                b"7f145b50ef07fb9accc40ee07a01fe93ceb6fa07d5a9f20fc3c8a48246dd4d02",
-                b"e67d2864614ada5eec8fb8ee1225a94a6fb0a1b3c347c854ec3037351c6a0fc7",
+                "78dd824aea33bed5c1502d1a17f11a4adbe923aac1cd1f7ae98c9506db294e4f",
+                "ddfe7f27e2894b983df773d8ac2a07973fc37ff36e93a2f2d71fb7327d4e18f4",
+                "7f145b50ef07fb9accc40ee07a01fe93ceb6fa07d5a9f20fc3c8a48246dd4d02",
+                "e67d2864614ada5eec8fb8ee1225a94a6fb0a1b3c347c854ec3037351c6a0fc7",
             ),
         ]
 
@@ -332,10 +328,10 @@ class TestCardanoAddress(unittest.TestCase):
             )
             n = keychain.derive([0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, i])
             self.assertEqual(a, address)
-            self.assertEqual(hexlify(n.private_key()), priv)
-            self.assertEqual(hexlify(n.private_key_ext()), ext)
-            self.assertEqual(hexlify(seed.remove_ed25519_prefix(n.public_key())), pub)
-            self.assertEqual(hexlify(n.chain_code()), chain)
+            self.assertEqual(n.private_key().hex(), priv)
+            self.assertEqual(n.private_key_ext().hex(), ext)
+            self.assertEqual(seed.remove_ed25519_prefix(n.public_key()).hex(), pub)
+            self.assertEqual(n.chain_code().hex(), chain)
 
     def test_testnet_byron_address(self):
         addresses = [
@@ -371,7 +367,7 @@ class TestCardanoAddress(unittest.TestCase):
             "BASE_OWN_STAKING_KEY_HASH": CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE,
                 address_n=[1852 | HARDENED, 1815 | HARDENED, 4 | HARDENED, 0, 0],
-                staking_key_hash=unhexlify(
+                staking_key_hash=bytes.fromhex(
                     "1bc428e4720702ebd5dab4fb175324c192dc9bb76cc5da956e3c8dff"
                 ),
             ),
@@ -379,7 +375,7 @@ class TestCardanoAddress(unittest.TestCase):
             "BASE_FOREIGN_STAKING_KEY_HASH_ACCOUNT_4": CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE,
                 address_n=[1852 | HARDENED, 1815 | HARDENED, 4 | HARDENED, 0, 0],
-                staking_key_hash=unhexlify(
+                staking_key_hash=bytes.fromhex(
                     "122a946b9ad3d2ddf029d3a828f0468aece76895f15c9efbd69b4277"
                 ),
             ),
@@ -387,7 +383,7 @@ class TestCardanoAddress(unittest.TestCase):
             "BASE_FOREIGN_STAKING_KEY_HASH_ACCOUNT_0": CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE,
                 address_n=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 0, 0],
-                staking_key_hash=unhexlify(
+                staking_key_hash=bytes.fromhex(
                     "122a946b9ad3d2ddf029d3a828f0468aece76895f15c9efbd69b4277"
                 ),
             ),
@@ -400,23 +396,23 @@ class TestCardanoAddress(unittest.TestCase):
                     2,
                     0,
                 ],
-                script_payment_hash=unhexlify(
+                script_payment_hash=bytes.fromhex(
                     "0d5acbf6a1dfb0c8724e60df314987315ccbf78bb6c0f9b6f3d568fe"
                 ),
             ),
             "BASE_KEY_SCRIPT_HASH": CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE_KEY_SCRIPT,
                 address_n=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 0, 0],
-                script_staking_hash=unhexlify(
+                script_staking_hash=bytes.fromhex(
                     "8d7bebc7a58f1c7b5fb7c9391071ecd3b51b032695522f8c555343a9"
                 ),
             ),
             "BASE_SCRIPT_SCRIPT_HASHES": CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE_SCRIPT_SCRIPT,
-                script_payment_hash=unhexlify(
+                script_payment_hash=bytes.fromhex(
                     "0d5acbf6a1dfb0c8724e60df314987315ccbf78bb6c0f9b6f3d568fe"
                 ),
-                script_staking_hash=unhexlify(
+                script_staking_hash=bytes.fromhex(
                     "8d7bebc7a58f1c7b5fb7c9391071ecd3b51b032695522f8c555343a9"
                 ),
             ),
@@ -439,7 +435,7 @@ class TestCardanoAddress(unittest.TestCase):
                 certificate_pointer=CardanoBlockchainPointerType(
                     block_index=24157, tx_index=177, certificate_index=42
                 ),
-                script_payment_hash=unhexlify(
+                script_payment_hash=bytes.fromhex(
                     "0d5acbf6a1dfb0c8724e60df314987315ccbf78bb6c0f9b6f3d568fe"
                 ),
             ),
@@ -449,7 +445,7 @@ class TestCardanoAddress(unittest.TestCase):
             ),
             "ENTERPRISE_SCRIPT_HASH": CardanoAddressParametersType(
                 address_type=CardanoAddressType.ENTERPRISE_SCRIPT,
-                script_payment_hash=unhexlify(
+                script_payment_hash=bytes.fromhex(
                     "0d5acbf6a1dfb0c8724e60df314987315ccbf78bb6c0f9b6f3d568fe"
                 ),
             ),
@@ -465,7 +461,7 @@ class TestCardanoAddress(unittest.TestCase):
             ),
             "REWARD_SCRIPT_HASH": CardanoAddressParametersType(
                 address_type=CardanoAddressType.REWARD_SCRIPT,
-                script_staking_hash=unhexlify(
+                script_staking_hash=bytes.fromhex(
                     "8d7bebc7a58f1c7b5fb7c9391071ecd3b51b032695522f8c555343a9"
                 ),
             ),
@@ -667,7 +663,7 @@ class TestCardanoAddress(unittest.TestCase):
                     2,
                     0,
                 ],
-                staking_key_hash=unhexlify(
+                staking_key_hash=bytes.fromhex(
                     "1bc428e4720702ebd5dab4fb175324c192dc9bb76cc5da956e3c8dff"
                 ),
             ),
@@ -676,7 +672,7 @@ class TestCardanoAddress(unittest.TestCase):
                 address_type=CardanoAddressType.BASE,
                 address_n=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 0, 0],
                 address_n_staking=None,
-                staking_key_hash=unhexlify(
+                staking_key_hash=bytes.fromhex(
                     "1bc428e4720702ebd5dab4fb175324c192dc9bb76cc5da956e3c8d"
                 ),
             ),
@@ -697,14 +693,14 @@ class TestCardanoAddress(unittest.TestCase):
             CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE_SCRIPT_KEY,
                 script_payment_hash=None,
-                staking_key_hash=unhexlify(
+                staking_key_hash=bytes.fromhex(
                     "1bc428e4720702ebd5dab4fb175324c192dc9bb76cc5da956e3c8d"
                 ),
             ),
             # base_script_key address - address_n_staking is not a staking path
             CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE_SCRIPT_KEY,
-                script_payment_hash=unhexlify(
+                script_payment_hash=bytes.fromhex(
                     "0d5acbf6a1dfb0c8724e60df314987315ccbf78bb6c0f9b6f3d568fe"
                 ),
                 address_n_staking=[
@@ -725,14 +721,14 @@ class TestCardanoAddress(unittest.TestCase):
             CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE_SCRIPT_SCRIPT,
                 script_payment_hash=None,
-                script_staking_hash=unhexlify(
+                script_staking_hash=bytes.fromhex(
                     "8d7bebc7a58f1c7b5fb7c9391071ecd3b51b032695522f8c555343a9"
                 ),
             ),
             # base_script_script address - script_staking and script_staking_hash are None
             CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE_SCRIPT_SCRIPT,
-                script_payment_hash=unhexlify(
+                script_payment_hash=bytes.fromhex(
                     "0d5acbf6a1dfb0c8724e60df314987315ccbf78bb6c0f9b6f3d568fe"
                 ),
                 script_staking_hash=None,
@@ -746,7 +742,7 @@ class TestCardanoAddress(unittest.TestCase):
             # pointer_script address - pointer is None
             CardanoAddressParametersType(
                 address_type=CardanoAddressType.POINTER_SCRIPT,
-                script_payment_hash=unhexlify(
+                script_payment_hash=bytes.fromhex(
                     "0d5acbf6a1dfb0c8724e60df314987315ccbf78bb6c0f9b6f3d568fe"
                 ),
                 certificate_pointer=None,
@@ -778,14 +774,14 @@ class TestCardanoAddress(unittest.TestCase):
             CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE,
                 address_n=[44 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 0, 0],
-                staking_key_hash=unhexlify(
+                staking_key_hash=bytes.fromhex(
                     "1bc428e4720702ebd5dab4fb175324c192dc9bb76cc5da956e3c8dff"
                 ),
             ),
             CardanoAddressParametersType(
                 address_type=CardanoAddressType.BASE_KEY_SCRIPT,
                 address_n=[44 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 0, 0],
-                script_staking_hash=unhexlify(
+                script_staking_hash=bytes.fromhex(
                     "8d7bebc7a58f1c7b5fb7c9391071ecd3b51b032695522f8c555343a9"
                 ),
             ),
diff --git a/core/tests/test_apps.cardano.certificate.py b/core/tests/test_apps.cardano.certificate.py
index 198d5e74..d14d2c23 100644
--- a/core/tests/test_apps.cardano.certificate.py
+++ b/core/tests/test_apps.cardano.certificate.py
@@ -27,13 +27,13 @@ class TestCardanoCertificate(unittest.TestCase):
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
@@ -44,14 +44,14 @@ class TestCardanoCertificate(unittest.TestCase):
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION_CONWAY,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 deposit=2000000,
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION_CONWAY,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 deposit=2000000,
@@ -59,25 +59,25 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DELEGATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DELEGATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
             ),
@@ -87,13 +87,13 @@ class TestCardanoCertificate(unittest.TestCase):
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
@@ -104,14 +104,14 @@ class TestCardanoCertificate(unittest.TestCase):
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION_CONWAY,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 deposit=2000000,
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION_CONWAY,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 deposit=2000000,
@@ -119,10 +119,10 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_POOL_REGISTRATION,
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -137,38 +137,38 @@ class TestCardanoCertificate(unittest.TestCase):
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.KEY_HASH,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.SCRIPT_HASH,
-                    script_hash=unhexlify(
+                    script_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(type=CardanoDRepType.ABSTAIN),
             ),
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(type=CardanoDRepType.NO_CONFIDENCE),
@@ -184,17 +184,17 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
             # STAKE_REGISTRATION both script_hash and key_hash are set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
@@ -202,7 +202,7 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
             ),
@@ -217,10 +217,10 @@ class TestCardanoCertificate(unittest.TestCase):
                 type=CardanoCertificateType.STAKE_REGISTRATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -241,7 +241,7 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION_CONWAY,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 deposit=2000000,
@@ -249,10 +249,10 @@ class TestCardanoCertificate(unittest.TestCase):
             # STAKE_REGISTRATION_CONWAY both script_hash and key_hash are set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION_CONWAY,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 deposit=2000000,
@@ -261,7 +261,7 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_REGISTRATION_CONWAY,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
                 deposit=2000000,
@@ -276,10 +276,10 @@ class TestCardanoCertificate(unittest.TestCase):
                 type=CardanoCertificateType.STAKE_REGISTRATION_CONWAY,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -295,7 +295,7 @@ class TestCardanoCertificate(unittest.TestCase):
             # STAKE_DELEGATION neither path or script_hash is set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DELEGATION,
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
             ),
@@ -303,23 +303,23 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DELEGATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
             ),
             # STAKE_DELEGATION both script_hash and key_hash are set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DELEGATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
             ),
@@ -327,14 +327,14 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DELEGATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -354,17 +354,17 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
             # STAKE_DEREGISTRATION both script_hash and key_hash are set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
@@ -372,7 +372,7 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
             ),
@@ -387,10 +387,10 @@ class TestCardanoCertificate(unittest.TestCase):
                 type=CardanoCertificateType.STAKE_DEREGISTRATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -411,7 +411,7 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION_CONWAY,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 deposit=2000000,
@@ -419,10 +419,10 @@ class TestCardanoCertificate(unittest.TestCase):
             # STAKE_DEREGISTRATION_CONWAY both script_hash and key_hash are set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION_CONWAY,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 deposit=2000000,
@@ -431,7 +431,7 @@ class TestCardanoCertificate(unittest.TestCase):
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_DEREGISTRATION_CONWAY,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
                 deposit=2000000,
@@ -446,10 +446,10 @@ class TestCardanoCertificate(unittest.TestCase):
                 type=CardanoCertificateType.STAKE_DEREGISTRATION_CONWAY,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -471,10 +471,10 @@ class TestCardanoCertificate(unittest.TestCase):
                 type=CardanoCertificateType.STAKE_POOL_REGISTRATION,
                 path=[1852 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 2, 0],
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -489,14 +489,14 @@ class TestCardanoCertificate(unittest.TestCase):
             # STAKE_POOL_REGISTRATION script hash is set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_POOL_REGISTRATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -511,14 +511,14 @@ class TestCardanoCertificate(unittest.TestCase):
             # STAKE_POOL_REGISTRATION key hash is set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_POOL_REGISTRATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -533,17 +533,17 @@ class TestCardanoCertificate(unittest.TestCase):
             # STAKE_POOL_REGISTRATION pool is set
             CardanoTxCertificate(
                 type=CardanoCertificateType.STAKE_POOL_REGISTRATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
-                pool=unhexlify(
+                pool=bytes.fromhex(
                     "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                 ),
                 pool_parameters=CardanoPoolParametersType(
-                    pool_id=unhexlify(
+                    pool_id=bytes.fromhex(
                         "f61c42cbf7c8c53af3f520508212ad3e72f674f957fe23ff0acb4973"
                     ),
-                    vrf_key_hash=unhexlify(
+                    vrf_key_hash=bytes.fromhex(
                         "198890ad6c92e80fbdab554dda02da9fb49d001bbd96181f3e07f7a6ab0d0640"
                     ),
                     pledge=500000000,
@@ -558,14 +558,14 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION missing drep
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
             ),
             # VOTE_REGISTRATION missing key hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(type=CardanoDRepType.KEY_HASH),
@@ -573,7 +573,7 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION missing script hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(type=CardanoDRepType.SCRIPT_HASH),
@@ -581,12 +581,12 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION unexpected script hash set instead of key hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.KEY_HASH,
-                    script_hash=unhexlify(
+                    script_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -594,12 +594,12 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION unexpected key hash set instead of script hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.SCRIPT_HASH,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -607,15 +607,15 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION key hash set but unexpected script hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.KEY_HASH,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
-                    script_hash=unhexlify(
+                    script_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -623,15 +623,15 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION script hash set but unexpected key hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                script_hash=unhexlify(
+                script_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.SCRIPT_HASH,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
-                    script_hash=unhexlify(
+                    script_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -639,12 +639,12 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION unexpected key hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.ABSTAIN,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -652,12 +652,12 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION unexpected key hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.NO_CONFIDENCE,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -665,12 +665,12 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION unexpected script hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.ABSTAIN,
-                    script_hash=unhexlify(
+                    script_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -678,12 +678,12 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION unexpected script hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.NO_CONFIDENCE,
-                    script_hash=unhexlify(
+                    script_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -691,15 +691,15 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION unexpected script hash and key hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.ABSTAIN,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
-                    script_hash=unhexlify(
+                    script_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
@@ -707,15 +707,15 @@ class TestCardanoCertificate(unittest.TestCase):
             # VOTE_REGISTRATION unexpected script hash and key hash
             CardanoTxCertificate(
                 type=CardanoCertificateType.VOTE_DELEGATION,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                 ),
                 drep=CardanoDRep(
                     type=CardanoDRepType.NO_CONFIDENCE,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
-                    script_hash=unhexlify(
+                    script_hash=bytes.fromhex(
                         "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd"
                     ),
                 ),
diff --git a/core/tests/test_apps.cardano.get_public_key.py b/core/tests/test_apps.cardano.get_public_key.py
index be487b5d..f5f55a8d 100644
--- a/core/tests/test_apps.cardano.get_public_key.py
+++ b/core/tests/test_apps.cardano.get_public_key.py
@@ -34,25 +34,25 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         ]
 
         public_keys = [
-            b"a938c8554ae04616cfaae7cd0eb557475082c4e910242ce774967e0bd7492408",
-            b"8c47ebce34234d04fd3dfbac33feaba6133e4e3d77c4b5ab18120ec6878ad4ce",
-            b"17cc0bf978756d0d5c76f931629036a810c61801b78beecb44555773d13e3791",
-            b"b90fb812a2268e9569ff1172e8daed1da3dc7e72c7bded7c5bcb7282039f90d5",
-            b"f698a764b23aa6667b1157fc4247c6a1b58c21a3865ac6a47a3590167a9e0211",
-            b"e9c46841be76e3be0289694fd5c7503c04f40e5b036abac200b98a9006cf6647",
-            b"6d225f078ca611f00d86cbfd8ba6c6ac7826721434eae6525686efb878b72370",
-            b"5d010cf16fdeff40955633d6c565f3844a288a24967cf6b76acbeb271b4f13c1",
+            "a938c8554ae04616cfaae7cd0eb557475082c4e910242ce774967e0bd7492408",
+            "8c47ebce34234d04fd3dfbac33feaba6133e4e3d77c4b5ab18120ec6878ad4ce",
+            "17cc0bf978756d0d5c76f931629036a810c61801b78beecb44555773d13e3791",
+            "b90fb812a2268e9569ff1172e8daed1da3dc7e72c7bded7c5bcb7282039f90d5",
+            "f698a764b23aa6667b1157fc4247c6a1b58c21a3865ac6a47a3590167a9e0211",
+            "e9c46841be76e3be0289694fd5c7503c04f40e5b036abac200b98a9006cf6647",
+            "6d225f078ca611f00d86cbfd8ba6c6ac7826721434eae6525686efb878b72370",
+            "5d010cf16fdeff40955633d6c565f3844a288a24967cf6b76acbeb271b4f13c1",
         ]
 
         chain_codes = [
-            b"cbf6ab47c8eb1a0477fc40b25dbb6c4a99454edb97d6fe5acedd3e238ef46fe0",
-            b"02ac67c59a8b0264724a635774ca2c242afa10d7ab70e2bf0a8f7d4bb10f1f7a",
-            b"646ac4a6295326bae6831be05921edfbcb362de48dfd37b12e74c227dfad768d",
-            b"fd8e71c1543de2cdc7f7623130c5f2cceb53549055fa1f5bc88199989e08cce7",
-            b"13cfb6de37a568aae56cadac907e6469b121464fe1b70a10c213eaea2cbb6636",
-            b"58f3f46f4a93e7a4431e75b10af7497b747c3053cb7466ed53f4277e78a63c52",
-            b"f72b3c361381db2d88289440268c94c5e7467c9414375e6b63d03026750f3c66",
-            b"f123474e140a2c360b01f0fa66f2f22e2e965a5b07a80358cf75f77abbd66088",
+            "cbf6ab47c8eb1a0477fc40b25dbb6c4a99454edb97d6fe5acedd3e238ef46fe0",
+            "02ac67c59a8b0264724a635774ca2c242afa10d7ab70e2bf0a8f7d4bb10f1f7a",
+            "646ac4a6295326bae6831be05921edfbcb362de48dfd37b12e74c227dfad768d",
+            "fd8e71c1543de2cdc7f7623130c5f2cceb53549055fa1f5bc88199989e08cce7",
+            "13cfb6de37a568aae56cadac907e6469b121464fe1b70a10c213eaea2cbb6636",
+            "58f3f46f4a93e7a4431e75b10af7497b747c3053cb7466ed53f4277e78a63c52",
+            "f72b3c361381db2d88289440268c94c5e7467c9414375e6b63d03026750f3c66",
+            "f123474e140a2c360b01f0fa66f2f22e2e965a5b07a80358cf75f77abbd66088",
         ]
 
         xpub_keys = [
@@ -69,8 +69,8 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         for index, derivation_path in enumerate(derivation_paths):
             key = _get_public_key(keychain, derivation_path)
 
-            self.assertEqual(hexlify(key.node.public_key), public_keys[index])
-            self.assertEqual(hexlify(key.node.chain_code), chain_codes[index])
+            self.assertEqual(key.node.public_key.hex(), public_keys[index])
+            self.assertEqual(key.node.chain_code.hex(), chain_codes[index])
             self.assertEqual(key.xpub, xpub_keys[index])
 
     def test_get_public_key_scheme_18_words(self):
@@ -84,13 +84,13 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         ]
 
         public_keys = [
-            b"82f12f1916c0c35a412291e72204f17f033b0b7edf148dfd7d75acd3975c9ac0",
-            b"d92d0590e76bbf0300112a9f283fba2f7f8af5cf1054d634b610d1e4f541df90",
+            "82f12f1916c0c35a412291e72204f17f033b0b7edf148dfd7d75acd3975c9ac0",
+            "d92d0590e76bbf0300112a9f283fba2f7f8af5cf1054d634b610d1e4f541df90",
         ]
 
         chain_codes = [
-            b"974f9cd4336e23b976f934752026a2d4c32d2e23f0532f4f87152b45fa5ca81f",
-            b"352499ed19b47f2bc8c164b47df0d55f428cc8c12f96b7e65d7563114ddfd75b",
+            "974f9cd4336e23b976f934752026a2d4c32d2e23f0532f4f87152b45fa5ca81f",
+            "352499ed19b47f2bc8c164b47df0d55f428cc8c12f96b7e65d7563114ddfd75b",
         ]
 
         xpub_keys = [
@@ -101,8 +101,8 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         for index, derivation_path in enumerate(derivation_paths):
             key = _get_public_key(keychain, derivation_path)
 
-            self.assertEqual(hexlify(key.node.public_key), public_keys[index])
-            self.assertEqual(hexlify(key.node.chain_code), chain_codes[index])
+            self.assertEqual(key.node.public_key.hex(), public_keys[index])
+            self.assertEqual(key.node.chain_code.hex(), chain_codes[index])
             self.assertEqual(key.xpub, xpub_keys[index])
 
     def test_get_public_key_scheme_24_words(self):
@@ -116,13 +116,13 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         ]
 
         public_keys = [
-            b"9d45d1e979bd0b942adb1896019c85d08fbc562f012775a1f72fc7be8fe9e4b6",
-            b"a85a339897354931d584f828f6d79d4227ed16f3468990687ab42f13a87c9ea8",
+            "9d45d1e979bd0b942adb1896019c85d08fbc562f012775a1f72fc7be8fe9e4b6",
+            "a85a339897354931d584f828f6d79d4227ed16f3468990687ab42f13a87c9ea8",
         ]
 
         chain_codes = [
-            b"aad67fd6d620f7af88ad816a229de09cfacff3e28008a528759b2e2cf28d859a",
-            b"e6f844931e7e2ec724e6e62efde662ae2669355322dc3eb9b307bc1c8e75e219",
+            "aad67fd6d620f7af88ad816a229de09cfacff3e28008a528759b2e2cf28d859a",
+            "e6f844931e7e2ec724e6e62efde662ae2669355322dc3eb9b307bc1c8e75e219",
         ]
 
         xpub_keys = [
@@ -133,8 +133,8 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         for index, derivation_path in enumerate(derivation_paths):
             key = _get_public_key(keychain, derivation_path)
 
-            self.assertEqual(hexlify(key.node.public_key), public_keys[index])
-            self.assertEqual(hexlify(key.node.chain_code), chain_codes[index])
+            self.assertEqual(key.node.public_key.hex(), public_keys[index])
+            self.assertEqual(key.node.chain_code.hex(), chain_codes[index])
             self.assertEqual(key.xpub, xpub_keys[index])
 
     def test_slip39_128(self):
@@ -164,15 +164,15 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         ]
 
         public_keys = [
-            b"bc043d84b8b891d49890edb6aced6f2d78395f255c5b6aea8878b913f83e8579",
-            b"24c4fe188a39103db88818bc191fd8571eae7b284ebcbdf2462bde97b058a95c",
-            b"831a63d381a8dab1e6e1ee991a4300fc70687aae5f97f4fcf92ed1b6c2bd99de",
+            "bc043d84b8b891d49890edb6aced6f2d78395f255c5b6aea8878b913f83e8579",
+            "24c4fe188a39103db88818bc191fd8571eae7b284ebcbdf2462bde97b058a95c",
+            "831a63d381a8dab1e6e1ee991a4300fc70687aae5f97f4fcf92ed1b6c2bd99de",
         ]
 
         chain_codes = [
-            b"dc3f0d2b5cccb822335ef6213fd133f4ca934151ec44a6000aee43b8a101078c",
-            b"6f7a744035f4b3ddb8f861c18446169643cc3ae85e271b4b4f0eda05cf84c65b",
-            b"672d6af4707aba201b7940231e83dd357f92f8851b3dfdc224ef311e1b64cdeb",
+            "dc3f0d2b5cccb822335ef6213fd133f4ca934151ec44a6000aee43b8a101078c",
+            "6f7a744035f4b3ddb8f861c18446169643cc3ae85e271b4b4f0eda05cf84c65b",
+            "672d6af4707aba201b7940231e83dd357f92f8851b3dfdc224ef311e1b64cdeb",
         ]
 
         xpub_keys = [
@@ -184,8 +184,8 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         for index, derivation_path in enumerate(derivation_paths):
             key = _get_public_key(keychain, derivation_path)
 
-            self.assertEqual(hexlify(key.node.public_key), public_keys[index])
-            self.assertEqual(hexlify(key.node.chain_code), chain_codes[index])
+            self.assertEqual(key.node.public_key.hex(), public_keys[index])
+            self.assertEqual(key.node.chain_code.hex(), chain_codes[index])
             self.assertEqual(key.xpub, xpub_keys[index])
 
     def test_slip39_256(self):
@@ -215,15 +215,15 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         ]
 
         public_keys = [
-            b"967a9a041ad1379e31c2c7f2aa4bc2b3f7769341c0ea89ccfb12a904f2e10877",
-            b"6f3805bbc1b7a75afa95dffec331671f3c4662800615e80d2ec1202a9d874c86",
-            b"7f145b50ef07fb9accc40ee07a01fe93ceb6fa07d5a9f20fc3c8a48246dd4d02",
+            "967a9a041ad1379e31c2c7f2aa4bc2b3f7769341c0ea89ccfb12a904f2e10877",
+            "6f3805bbc1b7a75afa95dffec331671f3c4662800615e80d2ec1202a9d874c86",
+            "7f145b50ef07fb9accc40ee07a01fe93ceb6fa07d5a9f20fc3c8a48246dd4d02",
         ]
 
         chain_codes = [
-            b"7b15d8d9006afe3cd7e04f375a1126a8c7c7c07c59a6f0c5b0310f4245f4edbb",
-            b"44baf30fd549e6a1e05f99c2a2c8971aea8894ee8d9c5fc2c5ae6ee839a56b2d",
-            b"e67d2864614ada5eec8fb8ee1225a94a6fb0a1b3c347c854ec3037351c6a0fc7",
+            "7b15d8d9006afe3cd7e04f375a1126a8c7c7c07c59a6f0c5b0310f4245f4edbb",
+            "44baf30fd549e6a1e05f99c2a2c8971aea8894ee8d9c5fc2c5ae6ee839a56b2d",
+            "e67d2864614ada5eec8fb8ee1225a94a6fb0a1b3c347c854ec3037351c6a0fc7",
         ]
 
         xpub_keys = [
@@ -235,8 +235,8 @@ class TestCardanoGetPublicKey(unittest.TestCase):
         for index, derivation_path in enumerate(derivation_paths):
             key = _get_public_key(keychain, derivation_path)
 
-            self.assertEqual(hexlify(key.node.public_key), public_keys[index])
-            self.assertEqual(hexlify(key.node.chain_code), chain_codes[index])
+            self.assertEqual(key.node.public_key.hex(), public_keys[index])
+            self.assertEqual(key.node.chain_code.hex(), chain_codes[index])
             self.assertEqual(key.xpub, xpub_keys[index])
 
 
diff --git a/core/tests/test_apps.cardano.native_script.py b/core/tests/test_apps.cardano.native_script.py
index 5385d0ee..11038faf 100644
--- a/core/tests/test_apps.cardano.native_script.py
+++ b/core/tests/test_apps.cardano.native_script.py
@@ -18,11 +18,11 @@ if not utils.BITCOIN_ONLY:
         [
             CardanoNativeScript(
                 type=CardanoNativeScriptType.PUB_KEY,
-                key_hash=unhexlify(
+                key_hash=bytes.fromhex(
                     "c4b9265645fde9536c0795adbcc5291767a0c61fd62448341d7e0386"
                 ),
             ),
-            b"29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd",
+            "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd",
         ],
         # PUB_KEY with path
         [
@@ -30,7 +30,7 @@ if not utils.BITCOIN_ONLY:
                 type=CardanoNativeScriptType.PUB_KEY,
                 key_path=[1854 | HARDENED, 1815 | HARDENED, 0 | HARDENED, 0, 0],
             ),
-            b"29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd",
+            "29fb5fd4aa8cadd6705acc8263cee0fc62edca5ac38db593fec2f9fd",
         ],
         # ALL
         [
@@ -43,13 +43,13 @@ if not utils.BITCOIN_ONLY:
                     ),
                     CardanoNativeScript(
                         type=CardanoNativeScriptType.PUB_KEY,
-                        key_hash=unhexlify(
+                        key_hash=bytes.fromhex(
                             "0241f2d196f52a92fbd2183d03b370c30b6960cfdeae364ffabac889"
                         ),
                     ),
                 ],
             ),
-            b"af5c2ce476a6ede1c879f7b1909d6a0b96cb2081391712d4a355cef6",
+            "af5c2ce476a6ede1c879f7b1909d6a0b96cb2081391712d4a355cef6",
         ],
         # ALL with 1855 path
         [
@@ -62,18 +62,18 @@ if not utils.BITCOIN_ONLY:
                     ),
                     CardanoNativeScript(
                         type=CardanoNativeScriptType.PUB_KEY,
-                        key_hash=unhexlify(
+                        key_hash=bytes.fromhex(
                             "0241f2d196f52a92fbd2183d03b370c30b6960cfdeae364ffabac889"
                         ),
                     ),
                 ],
             ),
-            b"fbf6672eb655c29b0f148fa1429be57c2174b067a7b3e3942e967fe8",
+            "fbf6672eb655c29b0f148fa1429be57c2174b067a7b3e3942e967fe8",
         ],
         # ALL scripts are empty
         [
             CardanoNativeScript(type=CardanoNativeScriptType.ALL, scripts=[]),
-            b"d441227553a0f1a965fee7d60a0f724b368dd1bddbc208730fccebcf",
+            "d441227553a0f1a965fee7d60a0f724b368dd1bddbc208730fccebcf",
         ],
         # ANY
         [
@@ -86,18 +86,18 @@ if not utils.BITCOIN_ONLY:
                     ),
                     CardanoNativeScript(
                         type=CardanoNativeScriptType.PUB_KEY,
-                        key_hash=unhexlify(
+                        key_hash=bytes.fromhex(
                             "0241f2d196f52a92fbd2183d03b370c30b6960cfdeae364ffabac889"
                         ),
                     ),
                 ],
             ),
-            b"d6428ec36719146b7b5fb3a2d5322ce702d32762b8c7eeeb797a20db",
+            "d6428ec36719146b7b5fb3a2d5322ce702d32762b8c7eeeb797a20db",
         ],
         # ANY scripts are empty
         [
             CardanoNativeScript(type=CardanoNativeScriptType.ANY, scripts=[]),
-            b"52dc3d43b6d2465e96109ce75ab61abe5e9c1d8a3c9ce6ff8a3af528",
+            "52dc3d43b6d2465e96109ce75ab61abe5e9c1d8a3c9ce6ff8a3af528",
         ],
         # N OF K
         [
@@ -111,19 +111,19 @@ if not utils.BITCOIN_ONLY:
                     ),
                     CardanoNativeScript(
                         type=CardanoNativeScriptType.PUB_KEY,
-                        key_hash=unhexlify(
+                        key_hash=bytes.fromhex(
                             "0241f2d196f52a92fbd2183d03b370c30b6960cfdeae364ffabac889"
                         ),
                     ),
                     CardanoNativeScript(
                         type=CardanoNativeScriptType.PUB_KEY,
-                        key_hash=unhexlify(
+                        key_hash=bytes.fromhex(
                             "cecb1d427c4ae436d28cc0f8ae9bb37501a5b77bcc64cd1693e9ae20"
                         ),
                     ),
                 ],
             ),
-            b"2b2b17fd18e18acae4601d4818a1dee00a917ff72e772fa8482e36c9",
+            "2b2b17fd18e18acae4601d4818a1dee00a917ff72e772fa8482e36c9",
         ],
         # N_OF_K scripts are empty
         [
@@ -132,7 +132,7 @@ if not utils.BITCOIN_ONLY:
                 required_signatures_count=0,
                 scripts=[],
             ),
-            b"3530cc9ae7f2895111a99b7a02184dd7c0cea7424f1632d73951b1d7",
+            "3530cc9ae7f2895111a99b7a02184dd7c0cea7424f1632d73951b1d7",
         ],
         # INVALID BEFORE
         [
@@ -141,7 +141,7 @@ if not utils.BITCOIN_ONLY:
                 scripts=[
                     CardanoNativeScript(
                         type=CardanoNativeScriptType.PUB_KEY,
-                        key_hash=unhexlify(
+                        key_hash=bytes.fromhex(
                             "c4b9265645fde9536c0795adbcc5291767a0c61fd62448341d7e0386"
                         ),
                     ),
@@ -150,7 +150,7 @@ if not utils.BITCOIN_ONLY:
                     ),
                 ],
             ),
-            b"c6262ef9bb2b1291c058d93b46dabf458e2d135f803f60713f84b0b7",
+            "c6262ef9bb2b1291c058d93b46dabf458e2d135f803f60713f84b0b7",
         ],
         # INVALID HEREAFTER
         [
@@ -159,7 +159,7 @@ if not utils.BITCOIN_ONLY:
                 scripts=[
                     CardanoNativeScript(
                         type=CardanoNativeScriptType.PUB_KEY,
-                        key_hash=unhexlify(
+                        key_hash=bytes.fromhex(
                             "c4b9265645fde9536c0795adbcc5291767a0c61fd62448341d7e0386"
                         ),
                     ),
@@ -169,7 +169,7 @@ if not utils.BITCOIN_ONLY:
                     ),
                 ],
             ),
-            b"b12ac304f89f4cd4d23f59a2b90d2b2697f7540b8f470d6aa05851b5",
+            "b12ac304f89f4cd4d23f59a2b90d2b2697f7540b8f470d6aa05851b5",
         ],
         # NESTED SCRIPT
         [
@@ -178,7 +178,7 @@ if not utils.BITCOIN_ONLY:
                 scripts=[
                     CardanoNativeScript(
                         type=CardanoNativeScriptType.PUB_KEY,
-                        key_hash=unhexlify(
+                        key_hash=bytes.fromhex(
                             "c4b9265645fde9536c0795adbcc5291767a0c61fd62448341d7e0386"
                         ),
                     ),
@@ -201,7 +201,7 @@ if not utils.BITCOIN_ONLY:
                             ),
                             CardanoNativeScript(
                                 type=CardanoNativeScriptType.PUB_KEY,
-                                key_hash=unhexlify(
+                                key_hash=bytes.fromhex(
                                     "0241f2d196f52a92fbd2183d03b370c30b6960cfdeae364ffabac889"
                                 ),
                             ),
@@ -223,13 +223,13 @@ if not utils.BITCOIN_ONLY:
                             ),
                             CardanoNativeScript(
                                 type=CardanoNativeScriptType.PUB_KEY,
-                                key_hash=unhexlify(
+                                key_hash=bytes.fromhex(
                                     "0241f2d196f52a92fbd2183d03b370c30b6960cfdeae364ffabac889"
                                 ),
                             ),
                             CardanoNativeScript(
                                 type=CardanoNativeScriptType.PUB_KEY,
-                                key_hash=unhexlify(
+                                key_hash=bytes.fromhex(
                                     "cecb1d427c4ae436d28cc0f8ae9bb37501a5b77bcc64cd1693e9ae20"
                                 ),
                             ),
@@ -244,7 +244,7 @@ if not utils.BITCOIN_ONLY:
                     ),
                 ],
             ),
-            b"4a6b4288459bf34668c0b281f922691460caf0c7c09caee3a726c27a",
+            "4a6b4288459bf34668c0b281f922691460caf0c7c09caee3a726c27a",
         ],
     ]
 
@@ -252,7 +252,7 @@ if not utils.BITCOIN_ONLY:
         # PUB_KEY key_hash has invalid length
         CardanoNativeScript(
             type=CardanoNativeScriptType.PUB_KEY,
-            key_hash=unhexlify(
+            key_hash=bytes.fromhex(
                 "3a55d9f68255dfbefa1efd711f82d005fae1be2e145d616c90cf0f"
             ),
         ),
@@ -272,7 +272,7 @@ if not utils.BITCOIN_ONLY:
             scripts=[
                 CardanoNativeScript(
                     type=CardanoNativeScriptType.PUB_KEY,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "3a55d9f68255dfbefa1efd711f82d005fae1be2e145d616c90cf0fa9"
                     ),
                 ),
@@ -285,7 +285,7 @@ if not utils.BITCOIN_ONLY:
             scripts=[
                 CardanoNativeScript(
                     type=CardanoNativeScriptType.PUB_KEY,
-                    key_hash=unhexlify(
+                    key_hash=bytes.fromhex(
                         "3a55d9f68255dfbefa1efd711f82d005fae1be2e145d616c90cf0fa9"
                     ),
                 ),
@@ -310,7 +310,7 @@ class TestCardanoNativeScript(unittest.TestCase):
 
         for script, expected_hash in VALID_NATIVE_SCRIPTS:
             actual_hash = get_native_script_hash(keychain, script)
-            self.assertEqual(hexlify(actual_hash), expected_hash)
+            self.assertEqual(actual_hash.hex(), expected_hash)
 
     def test_validate_native_script(self):
         for script, _ in VALID_NATIVE_SCRIPTS:
diff --git a/core/tests/test_apps.cardano.seed.py b/core/tests/test_apps.cardano.seed.py
index 94cec6fd..1e51cdd4 100644
--- a/core/tests/test_apps.cardano.seed.py
+++ b/core/tests/test_apps.cardano.seed.py
@@ -31,21 +31,21 @@ class TestCardanoKeychain(unittest.TestCase):
         ]
 
         public_keys = [
-            b"badd2852ccda7492364be0f88f2ba0b78c5f2d7179a941f1d19f756112b66afa",
-            b"34377409140c061d76778626d43456880d5471c1cbade8c372cb6a3be9678072",
-            b"73fea80d424276ad0978d4fe5310e8bc2d485f5f6bb3bf87612989f112ad5a7d",
-            b"f626ab887eb5f40b502463ccf2ec5a7311676ee9e5d55c492059a366c0b4d4a1",
-            b"408ee7b2d1c84d7899dba07150fae88c5411974f1762cb659dd928db8aac206b",
-            b"86e8a3880767e1ed521a47de1e031d47f33d5a8095be467bffbbd3295e27258e",
+            "badd2852ccda7492364be0f88f2ba0b78c5f2d7179a941f1d19f756112b66afa",
+            "34377409140c061d76778626d43456880d5471c1cbade8c372cb6a3be9678072",
+            "73fea80d424276ad0978d4fe5310e8bc2d485f5f6bb3bf87612989f112ad5a7d",
+            "f626ab887eb5f40b502463ccf2ec5a7311676ee9e5d55c492059a366c0b4d4a1",
+            "408ee7b2d1c84d7899dba07150fae88c5411974f1762cb659dd928db8aac206b",
+            "86e8a3880767e1ed521a47de1e031d47f33d5a8095be467bffbbd3295e27258e",
         ]
 
         chain_codes = [
-            b"e1c5d15875d3ed68667978af38fe3fe586511d87a784c0962a333c21e63a865d",
-            b"15c987276326a82defa4cb6762d43442f09e5dcbcc37fa0c58f24ae2dba3d3eb",
-            b"dd75e154da417becec55cdd249327454138f082110297d5e87ab25e15fad150f",
-            b"f7ab126f2884db9059fa09ca83be6b8bd0250426aeb62191bdd9861457b8bc91",
-            b"18d5c9d20c8d23bed068c9ff3a1126b940f0e537f9d94891828a999dda6fafd1",
-            b"580bba4bb0b9c56974e16a6998322a91e857e2fac28674404da993f6197fd29f",
+            "e1c5d15875d3ed68667978af38fe3fe586511d87a784c0962a333c21e63a865d",
+            "15c987276326a82defa4cb6762d43442f09e5dcbcc37fa0c58f24ae2dba3d3eb",
+            "dd75e154da417becec55cdd249327454138f082110297d5e87ab25e15fad150f",
+            "f7ab126f2884db9059fa09ca83be6b8bd0250426aeb62191bdd9861457b8bc91",
+            "18d5c9d20c8d23bed068c9ff3a1126b940f0e537f9d94891828a999dda6fafd1",
+            "580bba4bb0b9c56974e16a6998322a91e857e2fac28674404da993f6197fd29f",
         ]
 
         xpub_keys = [
@@ -60,8 +60,8 @@ class TestCardanoKeychain(unittest.TestCase):
         for index, derivation_path in enumerate(derivation_paths):
             key = _get_public_key(keychain, derivation_path)
 
-            self.assertEqual(hexlify(key.node.public_key), public_keys[index])
-            self.assertEqual(hexlify(key.node.chain_code), chain_codes[index])
+            self.assertEqual(key.node.public_key.hex(), public_keys[index])
+            self.assertEqual(key.node.chain_code.hex(), chain_codes[index])
             self.assertEqual(key.xpub, xpub_keys[index])
 
 
@@ -75,7 +75,7 @@ class TestCardanoDerivation(unittest.TestCase):
 
         secret = cardano.derive_icarus(binary_mnemonic, "", False)
         self.assertEqual(
-            hexlify(secret).decode(),
+            secret.hex(),
             "c065afd2832cd8b087c4d9ab7011f481ee1e0721e78ea5dd609f3ab3f156d245"
             "d176bd8fd4ec60b4731c3918a2a72a0226c0cd119ec35b47e4d55884667f552a"
             "23f7fdcd4a10c6cd2c7393ac61d877873e248f417634aa3d812af327ffe9d620",
@@ -85,7 +85,7 @@ class TestCardanoDerivation(unittest.TestCase):
 
         secret = cardano.derive_icarus(binary_mnemonic, "foo", False)
         self.assertEqual(
-            hexlify(secret).decode(),
+            secret.hex(),
             "70531039904019351e1afb361cd1b312a4d0565d4ff9f8062d38acf4b15cce41"
             "d7b5738d9c893feea55512a3004acb0d222c35d3e3d5cde943a15a9824cbac59"
             "443cf67e589614076ba01e354b1a432e0e6db3b59e37fc56b5fb0222970a010e",
@@ -102,7 +102,7 @@ class TestCardanoDerivation(unittest.TestCase):
         binary_mnemonic = bip39.mnemonic_to_bits(mnemonic)
         secret = cardano.derive_icarus(binary_mnemonic, "", True)
         self.assertEqual(
-            hexlify(secret).decode(),
+            secret.hex(),
             "409bb7a2998ec48029c8d2956fabd043a368ccc9b5120e42dd8a5c7145d08f45"
             "e8e8664d06f62b4fc3bab0134778af27ddf059a4ad1eb0efefeedd8189bbfe00"
             "deb289c5cdc2cf8ccfa19aea63b28424a4b0045b4b762292d46b73aa1c5cc99a",
@@ -113,7 +113,7 @@ class TestCardanoDerivation(unittest.TestCase):
         PASSPHRASE = "foo"
         secret = cardano.derive_icarus(binary_mnemonic, PASSPHRASE, True)
         self.assertEqual(
-            hexlify(secret).decode(),
+            secret.hex(),
             "c8ab7a160a66bfa7a118f553c4eebfe7444e36e449dac7d6eeae21f3bbaa9551"
             "8593025160068776a4d61c0efc4f698585bb59f1aebe93c58e1eaf557ab59502"
             "d9f68fbea3049bc2255d15fc63803e9c3dbb78abff2d53f8356794807d402568",
diff --git a/core/tests/test_apps.cardano.utils.py b/core/tests/test_apps.cardano.utils.py
index be467026..ba8a45c1 100644
--- a/core/tests/test_apps.cardano.utils.py
+++ b/core/tests/test_apps.cardano.utils.py
@@ -56,7 +56,8 @@ class TestCardanoUtils(unittest.TestCase):
 
         for params, expected in test_vectors:
             actual = format_asset_fingerprint(
-                policy_id=unhexlify(params[0]), asset_name_bytes=unhexlify(params[1])
+                policy_id=bytes.fromhex(params[0]),
+                asset_name_bytes=bytes.fromhex(params[1]),
             )
             self.assertEqual(actual, expected)
 
diff --git a/core/tests/test_apps.common.cbor.py b/core/tests/test_apps.common.cbor.py
index ae62d8e1..e7ef7ae8 100644
--- a/core/tests/test_apps.common.cbor.py
+++ b/core/tests/test_apps.common.cbor.py
@@ -26,7 +26,7 @@ class TestCardanoCbor(unittest.TestCase):
             ((2**64) - 1, "9bffffffffffffffff"),
         ]
         for val, header_hex in test_vectors:
-            header = unhexlify(header_hex)
+            header = bytes.fromhex(header_hex)
             self.assertEqual(create_array_header(val), header)
 
         with self.assertRaises(NotImplementedError):
@@ -42,7 +42,7 @@ class TestCardanoCbor(unittest.TestCase):
             ((2**64) - 1, "d901029bffffffffffffffff"),
         ]
         for val, header_hex in test_vectors:
-            header = unhexlify(header_hex)
+            header = bytes.fromhex(header_hex)
             self.assertEqual(create_tagged_set_header(val), header)
 
         with self.assertRaises(NotImplementedError):
@@ -58,7 +58,7 @@ class TestCardanoCbor(unittest.TestCase):
             ((2**64) - 1, "bbffffffffffffffff"),
         ]
         for val, header_hex in test_vectors:
-            header = unhexlify(header_hex)
+            header = bytes.fromhex(header_hex)
             self.assertEqual(create_map_header(val), header)
 
         with self.assertRaises(NotImplementedError):
@@ -74,7 +74,7 @@ class TestCardanoCbor(unittest.TestCase):
             ((2**64) - 1, "d8185bffffffffffffffff"),
         ]
         for val, header_hex in test_vectors:
-            header = unhexlify(header_hex)
+            header = bytes.fromhex(header_hex)
             self.assertEqual(create_embedded_cbor_bytes_header(val), header)
 
         with self.assertRaises(NotImplementedError):
@@ -105,7 +105,7 @@ class TestCardanoCbor(unittest.TestCase):
             (-1000000000000, "3B000000E8D4A50FFF"),
             # binary strings
             (b"", "40"),
-            (unhexlify("01020304"), "4401020304"),
+            (bytes.fromhex("01020304"), "4401020304"),
             # text strings
             ("", "60"),
             ("Fun", "6346756e"),
@@ -115,7 +115,7 @@ class TestCardanoCbor(unittest.TestCase):
             ),
             # tags
             (Tagged(1, 1363896240), "c11a514b67b0"),
-            (Tagged(23, unhexlify("01020304")), "d74401020304"),
+            (Tagged(23, bytes.fromhex("01020304")), "d74401020304"),
             # arrays
             ([], "80"),
             ([1, 2, 3], "83010203"),
@@ -142,7 +142,7 @@ class TestCardanoCbor(unittest.TestCase):
             (None, "f6"),
         ]
         for val, encoded_hex in test_vectors:
-            encoded = unhexlify(encoded_hex)
+            encoded = bytes.fromhex(encoded_hex)
             self.assertEqual(encode(val), encoded)
             self.assertEqual(decode(encoded), val)
 
@@ -161,7 +161,7 @@ class TestCardanoCbor(unittest.TestCase):
         ]
         for val, encoded_hex in test_vectors:
             value_tuple = tuple(val)
-            encoded = unhexlify(encoded_hex)
+            encoded = bytes.fromhex(encoded_hex)
             self.assertEqual(encode(value_tuple), encoded)
             self.assertEqual(decode(encoded), val)
 
@@ -180,7 +180,7 @@ class TestCardanoCbor(unittest.TestCase):
             for key, value in val:
                 ordered_map[key] = value
 
-            encoded = unhexlify(encoded_hex)
+            encoded = bytes.fromhex(encoded_hex)
             self.assertEqual(encode(ordered_map), encoded)
             self.assertEqual(decode(encoded), {k: v for k, v in val})
 
diff --git a/core/tests/test_apps.common.payment_request.py b/core/tests/test_apps.common.payment_request.py
index c305d3ca..1100afa8 100644
--- a/core/tests/test_apps.common.payment_request.py
+++ b/core/tests/test_apps.common.payment_request.py
@@ -80,7 +80,9 @@ def _get_request_without_memos() -> PaymentRequest:
         "e55efcc85de5ab52a57a8ecf675d8454d6204c98298f93faf71c668fec9340070"
     )
     return PaymentRequest(
-        recipient_name="TEST Recipient", signature=unhexlify(debug_signature), memos=[]
+        recipient_name="TEST Recipient",
+        signature=bytes.fromhex(debug_signature),
+        memos=[],
     )
 
 
@@ -116,14 +118,14 @@ def _get_request_with_coin_purchase_memo() -> PaymentRequest:
 def _get_sell_payment_request(include_nonce=b"DEBUG NONCE") -> PaymentRequest:
     text_memo = TextMemo(text="text memo text")
     mac = "a7594205d318491c7335d460acfebadc3c862b803abfd5a0fcf7ea6082bff1dc"
-    refund_memo = RefundMemo(address="ADDRESS", mac=unhexlify(mac))
+    refund_memo = RefundMemo(address="ADDRESS", mac=bytes.fromhex(mac))
     debug_signature = (
         "20a71af90876caf75f987c432d7769311e04e0cf23afb31279acdf5563a0154a2"
         "372a44d16c605b0710e9c7c93a0e9a382d946d99c43490edfcdf366bdbca5305c"
     )
     return PaymentRequest(
         recipient_name="TEST Recipient",
-        signature=unhexlify(debug_signature),
+        signature=bytes.fromhex(debug_signature),
         nonce=include_nonce,
         memos=[
             PaymentRequestMemo(text_memo=text_memo),
@@ -140,12 +142,12 @@ def _get_coin_swap_request(include_nonce=b"DEBUG NONCE") -> PaymentRequest:
         "e4c26c0ee3666380476deff2ac3d1899e86a298d98e249302207ffd14e70a3030"
     )
     coin_purchase_memo = CoinPurchaseMemo(
-        coin_type=0, amount="AMOUNT", address="ADDRESS", mac=unhexlify(mac)
+        coin_type=0, amount="AMOUNT", address="ADDRESS", mac=bytes.fromhex(mac)
     )
-    refund_memo = RefundMemo(address="Refund address", mac=unhexlify(mac2))
+    refund_memo = RefundMemo(address="Refund address", mac=bytes.fromhex(mac2))
     return PaymentRequest(
         recipient_name="TEST Recipient",
-        signature=unhexlify(debug_signature),
+        signature=bytes.fromhex(debug_signature),
         nonce=include_nonce,
         memos=[
             PaymentRequestMemo(coin_purchase_memo=coin_purchase_memo),
diff --git a/core/tests/test_apps.common.seed.py b/core/tests/test_apps.common.seed.py
index 37e82d21..ea1f4f64 100644
--- a/core/tests/test_apps.common.seed.py
+++ b/core/tests/test_apps.common.seed.py
@@ -17,22 +17,22 @@ class TestSeed(unittest.TestCase):
         keychain = Keychain(seed, "", [], slip21_namespaces=[[b"SLIP-0021"]])
 
         # Key(m)
-        KEY_M = unhexlify(
-            b"dbf12b44133eaab506a740f6565cc117228cbf1dd70635cfa8ddfdc9af734756"
+        KEY_M = bytes.fromhex(
+            "dbf12b44133eaab506a740f6565cc117228cbf1dd70635cfa8ddfdc9af734756"
         )
         self.assertEqual(node1.key(), KEY_M)
 
         # Key(m/"SLIP-0021")
-        KEY_M_SLIP0021 = unhexlify(
-            b"1d065e3ac1bbe5c7fad32cf2305f7d709dc070d672044a19e610c77cdf33de0d"
+        KEY_M_SLIP0021 = bytes.fromhex(
+            "1d065e3ac1bbe5c7fad32cf2305f7d709dc070d672044a19e610c77cdf33de0d"
         )
         node1.derive_path([b"SLIP-0021"])
         self.assertEqual(node1.key(), KEY_M_SLIP0021)
         self.assertEqual(keychain.derive_slip21([b"SLIP-0021"]).key(), KEY_M_SLIP0021)
 
         # Key(m/"SLIP-0021"/"Master encryption key")
-        KEY_M_SLIP0021_MEK = unhexlify(
-            b"ea163130e35bbafdf5ddee97a17b39cef2be4b4f390180d65b54cf05c6a82fde"
+        KEY_M_SLIP0021_MEK = bytes.fromhex(
+            "ea163130e35bbafdf5ddee97a17b39cef2be4b4f390180d65b54cf05c6a82fde"
         )
         node1.derive_path([b"Master encryption key"])
         self.assertEqual(node1.key(), KEY_M_SLIP0021_MEK)
@@ -42,8 +42,8 @@ class TestSeed(unittest.TestCase):
         )
 
         # Key(m/"SLIP-0021"/"Authentication key")
-        KEY_M_SLIP0021_AK = unhexlify(
-            b"47194e938ab24cc82bfa25f6486ed54bebe79c40ae2a5a32ea6db294d81861a6"
+        KEY_M_SLIP0021_AK = bytes.fromhex(
+            "47194e938ab24cc82bfa25f6486ed54bebe79c40ae2a5a32ea6db294d81861a6"
         )
         node2.derive_path([b"SLIP-0021", b"Authentication key"])
         self.assertEqual(node2.key(), KEY_M_SLIP0021_AK)
diff --git a/core/tests/test_apps.eos.get_public_key.py b/core/tests/test_apps.eos.get_public_key.py
index e07502d3..e5c8d95b 100644
--- a/core/tests/test_apps.eos.get_public_key.py
+++ b/core/tests/test_apps.eos.get_public_key.py
@@ -30,10 +30,10 @@ class TestEosGetPublicKey(unittest.TestCase):
         ]
 
         public_keys = [
-            b"0315c358024ce46767102578947584c4342a6982b922d454f63588effa34597197",
-            b"029622eff7248c4d298fe28f2df19ee0d5f7674f678844e05c31d1a5632412869e",
-            b"02625f33c10399703e95e41bd5054beef3ab893dcc7df2bb9bdcee48359b29069d",
-            b"037c9b7d24d42589941cca3f4debc75b37c0e7b881e6eb00d2e674958debe3bbc3",
+            "0315c358024ce46767102578947584c4342a6982b922d454f63588effa34597197",
+            "029622eff7248c4d298fe28f2df19ee0d5f7674f678844e05c31d1a5632412869e",
+            "02625f33c10399703e95e41bd5054beef3ab893dcc7df2bb9bdcee48359b29069d",
+            "037c9b7d24d42589941cca3f4debc75b37c0e7b881e6eb00d2e674958debe3bbc3",
         ]
 
         wif_keys = [
@@ -48,7 +48,7 @@ class TestEosGetPublicKey(unittest.TestCase):
             node.derive_path(path)
             wif, public_key = _get_public_key(node)
 
-            self.assertEqual(hexlify(public_key), public_keys[index])
+            self.assertEqual(public_key.hex(), public_keys[index])
             self.assertEqual(wif, wif_keys[index])
             self.assertEqual(public_key_to_wif(public_key), wif_keys[index])
 
diff --git a/core/tests/test_apps.ethereum.clear_signing.py b/core/tests/test_apps.ethereum.clear_signing.py
index dd5220d6..8ddc11e4 100644
--- a/core/tests/test_apps.ethereum.clear_signing.py
+++ b/core/tests/test_apps.ethereum.clear_signing.py
@@ -5,8 +5,6 @@ import unittest
 
 if not utils.BITCOIN_ONLY:
 
-    from ubinascii import hexlify
-
     from ethereum_common import *
     from trezor.enums import EthereumERC7730FieldFormatterType as FT
     from trezor.messages import (
@@ -69,7 +67,7 @@ def to_bytes(v: int) -> bytes:
 class TestEthereumClearSigning(unittest.TestCase):
     def test_address_parsing_valid(self):
         addr_hex = "d8da6bf26964af9d7eed9e03e53415d37aa96045"
-        addr_bytes = unhexlify(addr_hex)
+        addr_bytes = bytes.fromhex(addr_hex)
 
         valid_payload = b"\x00" * 12 + addr_bytes
         data = memoryview(valid_payload)
@@ -82,7 +80,7 @@ class TestEthereumClearSigning(unittest.TestCase):
 
     def test_address_parsing_invalid_padding(self):
         addr_hex = "d8da6bf26964af9d7eed9e03e53415d37aa96045"
-        addr_bytes = unhexlify(addr_hex)
+        addr_bytes = bytes.fromhex(addr_hex)
 
         invalid_payload = b"\x01" + b"\x00" * 11 + addr_bytes  # dirty padding
         data = memoryview(invalid_payload)
@@ -165,7 +163,7 @@ class TestEthereumClearSigning(unittest.TestCase):
             is_dynamic=False,
         )
 
-        addr_bytes = unhexlify("d8da6bf26964af9d7eed9e03e53415d37aa96045")
+        addr_bytes = bytes.fromhex("d8da6bf26964af9d7eed9e03e53415d37aa96045")
         u160_val = 2**160 - 1
         bool_val = 1
 
@@ -186,7 +184,7 @@ class TestEthereumClearSigning(unittest.TestCase):
             is_dynamic=False,
         )
 
-        addr_bytes = unhexlify("d8da6bf26964af9d7eed9e03e53415d37aa96045")
+        addr_bytes = bytes.fromhex("d8da6bf26964af9d7eed9e03e53415d37aa96045")
         overflow_u160 = 2**160
         bool_val = 1
 
@@ -204,7 +202,7 @@ class TestEthereumClearSigning(unittest.TestCase):
     def test_dynamic_struct_valid(self):
         dynamic_struct = Tuple((parse_address, parse_string), is_dynamic=True)
 
-        addr = unhexlify("d8da6bf26964af9d7eed9e03e53415d37aa96045")
+        addr = bytes.fromhex("d8da6bf26964af9d7eed9e03e53415d37aa96045")
         # left padded with zeroes
         addr_bytes = b"\x00" * (32 - 20) + addr
 
@@ -250,9 +248,9 @@ class TestEthereumClearSigning(unittest.TestCase):
     def test_array_of_addresses_valid(self):
         address_array_parser = Array(Atomic(parse_address))
 
-        addr1 = unhexlify("d8da6bf26964af9d7eed9e03e53415d37aa96045")
+        addr1 = bytes.fromhex("d8da6bf26964af9d7eed9e03e53415d37aa96045")
         addr1_bytes = b"\x00" * (32 - 20) + addr1
-        addr2 = unhexlify("71c7656ec7ab88b098defb751b7401b5f6d8976f")
+        addr2 = bytes.fromhex("71c7656ec7ab88b098defb751b7401b5f6d8976f")
         addr2_bytes = b"\x00" * (32 - 20) + addr2
 
         array_length = len([addr1, addr2])
@@ -276,13 +274,13 @@ class TestEthereumClearSigning(unittest.TestCase):
     def test_array_of_addresses_with_dirty_element(self):
         address_array_parser = Array(Atomic(parse_address))
 
-        addr_valid_bytes = b"\x00" * 12 + unhexlify(
+        addr_valid_bytes = b"\x00" * 12 + bytes.fromhex(
             "d8da6bf26964af9d7eed9e03e53415d37aa96045"
         )
         addr_dirty_bytes = (
             b"\x01"
             + b"\x00" * 11
-            + unhexlify("71c7656ec7ab88b098defb751b7401b5f6d8976f")
+            + bytes.fromhex("71c7656ec7ab88b098defb751b7401b5f6d8976f")
         )
 
         payload = (
@@ -306,8 +304,8 @@ class TestEthereumClearSigning(unittest.TestCase):
             )
         )
 
-        addr1 = unhexlify("d8da6bf26964af9d7eed9e03e53415d37aa96045")
-        addr2 = unhexlify("71c7656ec7ab88b098defb751b7401b5f6d8976f")
+        addr1 = bytes.fromhex("d8da6bf26964af9d7eed9e03e53415d37aa96045")
+        addr2 = bytes.fromhex("71c7656ec7ab88b098defb751b7401b5f6d8976f")
         text1 = "Hello first world!"
         text2 = "Hello second world!"
 
@@ -358,10 +356,10 @@ class TestEthereumClearSigning(unittest.TestCase):
             )
         )
 
-        addr1 = unhexlify("6666666666666666666666666666666666666666")
-        addr2 = unhexlify("7777777777777777777777777777777777777777")
-        addr3 = unhexlify("8888888888888888888888888888888888888888")
-        addr4 = unhexlify("9999999999999999999999999999999999999999")
+        addr1 = bytes.fromhex("6666666666666666666666666666666666666666")
+        addr2 = bytes.fromhex("7777777777777777777777777777777777777777")
+        addr3 = bytes.fromhex("8888888888888888888888888888888888888888")
+        addr4 = bytes.fromhex("9999999999999999999999999999999999999999")
 
         def pad_addr(addr):
             return b"\x00" * (32 - 20) + addr
@@ -786,8 +784,8 @@ class TestEthereumClearSigning(unittest.TestCase):
             network = make_eth_network()
 
         fmt = AddressNameFormatter()
-        addr1 = unhexlify("d8da6bf26964af9d7eed9e03e53415d37aa96045")
-        addr2 = unhexlify("71c7656ec7ab88b098defb751b7401b5f6d8976f")
+        addr1 = bytes.fromhex("d8da6bf26964af9d7eed9e03e53415d37aa96045")
+        addr2 = bytes.fromhex("71c7656ec7ab88b098defb751b7401b5f6d8976f")
 
         formatted, _, _ = await_result(
             _format_field_value(fmt, [addr1, addr2], None, _Defs(), None)
@@ -803,7 +801,7 @@ class TestEthereumClearSigning(unittest.TestCase):
     def test_multi_value_token_amount(self):
         # Multi-value with TokenAmountFormatter: every element shares the one
         # (constant) token, rendered one amount-per-line.
-        token_addr = unhexlify("ae7ab96520de3a18e5e111b5eaab095312d7fe84")
+        token_addr = bytes.fromhex("ae7ab96520de3a18e5e111b5eaab095312d7fe84")
 
         class _Defs:
             network = make_eth_network()
@@ -935,7 +933,7 @@ class TestEthereumClearSigning(unittest.TestCase):
 
         addr_hex = "d8da6bf26964af9d7eed9e03e53415d37aa96045"
         flags = (1 << 255) | (1 << 160)
-        packed_address = flags | int.from_bytes(unhexlify(addr_hex), "big")
+        packed_address = flags | int.from_bytes(bytes.fromhex(addr_hex), "big")
 
         display_format = DisplayFormat(
             binding_context=None,
@@ -989,7 +987,7 @@ class TestEthereumClearSigning(unittest.TestCase):
     def test_from_proto_token_amount_constant_token(self):
         # Regression test for `from_proto`
         # Might use a .proto binary blob in future.
-        token_addr = unhexlify("ae7ab96520de3a18e5e111b5eaab095312d7fe84")  # stETH
+        token_addr = bytes.fromhex("ae7ab96520de3a18e5e111b5eaab095312d7fe84")  # stETH
         info = EthereumERC7730FieldInfo(
             path=EthereumERC7730Path(path=[0]),
             label="Amount",
@@ -1004,7 +1002,7 @@ class TestEthereumClearSigning(unittest.TestCase):
     def test_token_amount_constant_token_format(self):
         # The token is resolved from `defs` by the constant address, without
         # touching the calldata - so `path_walker` is never called (passed None).
-        token_addr = unhexlify("ae7ab96520de3a18e5e111b5eaab095312d7fe84")  # stETH
+        token_addr = bytes.fromhex("ae7ab96520de3a18e5e111b5eaab095312d7fe84")  # stETH
 
         class _Defs:
             network = make_eth_network()
@@ -1030,10 +1028,10 @@ class TestEthereumClearSigning(unittest.TestCase):
     # --- `calldata` fields (nested invocations) ---
 
     TRANSFER_SIG = b"\xa9\x05\x9c\xbb"
-    RECIPIENT = unhexlify("d8da6bf26964af9d7eed9e03e53415d37aa96045")
+    RECIPIENT = bytes.fromhex("d8da6bf26964af9d7eed9e03e53415d37aa96045")
     # stETH: mapped to "Lido" in KNOWN_ADDRESSES, exercising the provider /
     # callee name resolution. Will be updated once those definitions are removed.
-    CALLEE = unhexlify("ae7ab96520de3a18e5e111b5eaab095312d7fe84")
+    CALLEE = bytes.fromhex("ae7ab96520de3a18e5e111b5eaab095312d7fe84")
 
     @staticmethod
     def _msg(**kwargs):
@@ -1116,7 +1114,7 @@ class TestEthereumClearSigning(unittest.TestCase):
         # the fallback is two rows: the callee, then the raw hex blob
         self.assertEqual(len(fields), 2)
         self.assertEqual(fields[0][0][:2], ("Subcall to", callee_str))
-        self.assertEqual(fields[1][0][:2], ("Wrapped call", hexlify(blob).decode()))
+        self.assertEqual(fields[1][0][:2], ("Wrapped call", blob.hex()))
         for _, token, token_address in fields:
             self.assertIsNone(token)
             self.assertIsNone(token_address)
@@ -1175,7 +1173,7 @@ class TestEthereumClearSigning(unittest.TestCase):
         self.assertEqual(fields[1][0][:2], ("(Subcall) Intent", "Send"))
         (label, formatted, _), _, _ = fields[2]
         self.assertEqual(label, "(Subcall) To")
-        self.assertEqual(formatted.lower(), "0x" + hexlify(self.RECIPIENT).decode())
+        self.assertEqual(formatted.lower(), "0x" + self.RECIPIENT.hex())
         (label, formatted