refactor(core): fix renamed micropython modules

diff --git a/core/SConscript.unix b/core/SConscript.unix
index 90e4ee8d..8800c8f4 100644
--- a/core/SConscript.unix
+++ b/core/SConscript.unix
@@ -307,7 +307,7 @@ SOURCE_MOD += [
 
 SOURCE_MICROPYTHON = [
     'vendor/micropython/extmod/moductypes.c',
-    'vendor/micropython/extmod/moduos.c',
+    'vendor/micropython/extmod/modos.c',
     'vendor/micropython/extmod/utime_mphal.c',
     'vendor/micropython/shared/readline/readline.c',
     'vendor/micropython/shared/timeutils/timeutils.c',
@@ -352,7 +352,7 @@ SOURCE_MICROPYTHON = [
     'vendor/micropython/py/modstruct.c',
     'vendor/micropython/py/modsys.c',
     'vendor/micropython/py/modthread.c',
-    'vendor/micropython/py/moduerrno.c',
+    'vendor/micropython/py/moderrno.c',
     'vendor/micropython/py/mpprint.c',
     'vendor/micropython/py/mpstate.c',
     'vendor/micropython/py/mpz.c',
diff --git a/core/embed/projects/firmware/mpconfigport.h b/core/embed/projects/firmware/mpconfigport.h
index 97cbeff2..ad9be500 100644
--- a/core/embed/projects/firmware/mpconfigport.h
+++ b/core/embed/projects/firmware/mpconfigport.h
@@ -131,36 +131,36 @@
 #define MICROPY_PY_SYS_STDFILES     (0)
 #define MICROPY_PY_SYS_STDIO_BUFFER (0)
 #define MICROPY_PY_SYS_PLATFORM     "trezor"
-#define MICROPY_PY_UERRNO           (0)
+#define MICROPY_PY_ERRNO            (0)
 #define MICROPY_PY_THREAD           (0)
 #define MICROPY_PY_FSTRINGS         (1)
 
 // extended modules
 #define MICROPY_PY_UCTYPES          (!BITCOIN_ONLY)  // used in FIDO
-#define MICROPY_PY_UZLIB            (0)
-#define MICROPY_PY_UJSON            (0)
-#define MICROPY_PY_UOS              (0)
-#define MICROPY_PY_URE              (0)
-#define MICROPY_PY_URE_SUB          (0)
-#define MICROPY_PY_UHEAPQ           (0)
-#define MICROPY_PY_UHASHLIB         (0)
-#define MICROPY_PY_UHASHLIB_MD5     (0)
-#define MICROPY_PY_UHASHLIB_SHA1    (0)
-#define MICROPY_PY_UCRYPTOLIB       (0)
-#define MICROPY_PY_UBINASCII        (0)
-#define MICROPY_PY_UBINASCII_CRC32  (0)
-#define MICROPY_PY_URANDOM          (0)
-#define MICROPY_PY_URANDOM_EXTRA_FUNCS (0)
-#define MICROPY_PY_USELECT          (0)
-#define MICROPY_PY_UTIME            (1)
+#define MICROPY_PY_DEFLATE          (0)
+#define MICROPY_PY_JSON             (0)
+#define MICROPY_PY_OS               (0)
+#define MICROPY_PY_RE               (0)
+#define MICROPY_PY_RE_SUB           (0)
+#define MICROPY_PY_HEAPQ            (0)
+#define MICROPY_PY_HASHLIB          (0)
+#define MICROPY_PY_HASHLIB_MD5      (0)
+#define MICROPY_PY_HASHLIB_SHA1     (0)
+#define MICROPY_PY_CRYPTOLIB        (0)
+#define MICROPY_PY_BINASCII         (0)
+#define MICROPY_PY_BINASCII_CRC32   (0)
+#define MICROPY_PY_RANDOM           (0)
+#define MICROPY_PY_RANDOM_EXTRA_FUNCS (0)
+#define MICROPY_PY_SELECT           (0)
+#define MICROPY_PY_TIME             (1)
 #define MICROPY_PY_UTIME_MP_HAL     (1)
 #define MICROPY_PY_OS_DUPTERM       (0)
 #define MICROPY_PY_LWIP_SOCK_RAW    (0)
 #define MICROPY_PY_MACHINE          (0)
-#define MICROPY_PY_UWEBSOCKET       (0)
+#define MICROPY_PY_WEBSOCKET        (0)
 #define MICROPY_PY_WEBREPL          (0)
 #define MICROPY_PY_FRAMEBUF         (0)
-#define MICROPY_PY_USOCKET          (0)
+#define MICROPY_PY_SOCKET           (0)
 #define MICROPY_PY_NETWORK          (0)
 
 // allocate traceback data only on debug builds
diff --git a/core/embed/projects/unix/main.c b/core/embed/projects/unix/main.c
index fabd3ae8..43204861 100644
--- a/core/embed/projects/unix/main.c
+++ b/core/embed/projects/unix/main.c
@@ -71,7 +71,7 @@ STATIC void stderr_print_strn(void *env, const char *str, size_t len) {
 #ifdef USE_DBG_CONSOLE
   dbg_console_write(str, len);
 #endif
-  mp_uos_dupterm_tx_strn(str, len);
+  mp_os_dupterm_tx_strn(str, len);
 }
 
 const mp_print_t mp_stderr_print = {NULL, stderr_print_strn};
@@ -746,5 +746,3 @@ void nlr_jump_fail(void *val) {
   printf("FATAL: uncaught NLR %p\n", val);
   exit(1);
 }
-
-MP_REGISTER_MODULE(MP_QSTR_uos, mp_module_uos);
diff --git a/core/embed/projects/unix/mpconfigport.h b/core/embed/projects/unix/mpconfigport.h
index d7916961..a4241d5e 100644
--- a/core/embed/projects/unix/mpconfigport.h
+++ b/core/embed/projects/unix/mpconfigport.h
@@ -140,42 +140,42 @@
 #define MICROPY_PY_SYS_STDFILES     (0)
 #define MICROPY_PY_SYS_STDIO_BUFFER (0)
 #define MICROPY_PY_SYS_PLATFORM     "trezor-emulator"
-#define MICROPY_PY_UERRNO           (0)
+#define MICROPY_PY_ERRNO            (0)
 #define MICROPY_PY_THREAD           (0)
 #define MICROPY_PY_FSTRINGS         (1)
 
 // extended modules
 #define MICROPY_PY_UCTYPES          (!BITCOIN_ONLY)  // used in FIDO
-#define MICROPY_PY_UZLIB            (0)
-#define MICROPY_PY_UJSON            (0)
-#define MICROPY_PY_UOS              (1)
-#define MICROPY_PY_UOS_INCLUDEFILE  "ports/unix/moduos.c"
-#define MICROPY_PY_UOS_ERRNO        (1)
-#define MICROPY_PY_UOS_GETENV_PUTENV_UNSETENV (1)
-#define MICROPY_PY_UOS_SEP          (1)
-#define MICROPY_PY_UOS_SYSTEM       (1)
-#define MICROPY_PY_UOS_URANDOM      (1)
-#define MICROPY_PY_URE              (0)
-#define MICROPY_PY_URE_SUB          (0)
-#define MICROPY_PY_UHEAPQ           (0)
-#define MICROPY_PY_UHASHLIB         (0)
-#define MICROPY_PY_UHASHLIB_MD5     (0)
-#define MICROPY_PY_UHASHLIB_SHA1    (0)
-#define MICROPY_PY_UCRYPTOLIB       (0)
-#define MICROPY_PY_UBINASCII        (0)
-#define MICROPY_PY_UBINASCII_CRC32  (0)
-#define MICROPY_PY_URANDOM          (0)
-#define MICROPY_PY_URANDOM_EXTRA_FUNCS (0)
-#define MICROPY_PY_USELECT          (0)
-#define MICROPY_PY_UTIME            (1)
+#define MICROPY_PY_DEFLATE          (0)
+#define MICROPY_PY_JSON             (0)
+#define MICROPY_PY_OS               (1)
+#define MICROPY_PY_OS_INCLUDEFILE   "ports/unix/modos.c"
+#define MICROPY_PY_OS_ERRNO         (1)
+#define MICROPY_PY_OS_GETENV_PUTENV_UNSETENV (1)
+#define MICROPY_PY_OS_SEP           (1)
+#define MICROPY_PY_OS_SYSTEM        (1)
+#define MICROPY_PY_OS_URANDOM       (1)
+#define MICROPY_PY_RE               (0)
+#define MICROPY_PY_RE_SUB           (0)
+#define MICROPY_PY_HEAPQ            (0)
+#define MICROPY_PY_HASHLIB          (0)
+#define MICROPY_PY_HASHLIB_MD5      (0)
+#define MICROPY_PY_HASHLIB_SHA1     (0)
+#define MICROPY_PY_CRYPTOLIB        (0)
+#define MICROPY_PY_BINASCII         (0)
+#define MICROPY_PY_BINASCII_CRC32   (0)
+#define MICROPY_PY_RANDOM           (0)
+#define MICROPY_PY_RANDOM_EXTRA_FUNCS (0)
+#define MICROPY_PY_SELECT           (0)
+#define MICROPY_PY_TIME             (1)
 #define MICROPY_PY_UTIME_MP_HAL     (1)
 #define MICROPY_PY_OS_DUPTERM       (0)
 #define MICROPY_PY_LWIP_SOCK_RAW    (0)
 #define MICROPY_PY_MACHINE          (0)
-#define MICROPY_PY_UWEBSOCKET       (0)
+#define MICROPY_PY_WEBSOCKET        (0)
 #define MICROPY_PY_WEBREPL          (0)
 #define MICROPY_PY_FRAMEBUF         (0)
-#define MICROPY_PY_USOCKET          (0)
+#define MICROPY_PY_SOCKET           (0)
 #define MICROPY_PY_NETWORK          (0)
 
 // allocate traceback data only on debug builds
diff --git a/core/embed/rust/src/ui/geometry.rs b/core/embed/rust/src/ui/geometry.rs
index 76489623..cc5eebb8 100644
--- a/core/embed/rust/src/ui/geometry.rs
+++ b/core/embed/rust/src/ui/geometry.rs
@@ -373,7 +373,7 @@ impl Rect {
 
     /// Checks if the rectangle is empty.
     ///
-    /// It is possible to custruct a rectangle with negative width or height.
+    /// It is possible to construct a rectangle with negative width or height.
     /// All such rectangles are considered as empty.
     pub const fn is_empty(&self) -> bool {
         self.x0 >= self.x1 || self.y0 >= self.y1
diff --git a/core/embed/upymod/build.rs b/core/embed/upymod/build.rs
index 24af9788..fd1b466f 100644
--- a/core/embed/upymod/build.rs
+++ b/core/embed/upymod/build.rs
@@ -165,7 +165,7 @@ fn main() -> Result<()> {
                 "py/modstruct.c",
                 "py/modsys.c",
                 "py/modthread.c",
-                "py/moduerrno.c",
+                "py/moderrno.c",
                 "py/mpprint.c",
                 "py/mpstate.c",
                 "py/mpz.c",
@@ -249,7 +249,7 @@ fn main() -> Result<()> {
                 mpy_dir,
                 [
                     "extmod/vfs_posix_file.c",
-                    "extmod/moduos.c",
+                    "extmod/modos.c",
                     "py/emitnarm.c",
                     "py/emitnative.c",
                     "py/emitnthumb.c",
diff --git a/core/embed/upymod/modutime.c b/core/embed/upymod/modutime.c
index 956c8374..83fc5246 100644
--- a/core/embed/upymod/modutime.c
+++ b/core/embed/upymod/modutime.c
@@ -52,14 +52,14 @@ STATIC const mp_rom_map_elem_t time_module_globals_table[] = {
     {MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_utime)},
 
     {MP_ROM_QSTR(MP_QSTR_gmtime2000), MP_ROM_PTR(&time_gmtime2000_obj)},
-    {MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&mp_utime_sleep_obj)},
-    {MP_ROM_QSTR(MP_QSTR_sleep_ms), MP_ROM_PTR(&mp_utime_sleep_ms_obj)},
-    {MP_ROM_QSTR(MP_QSTR_sleep_us), MP_ROM_PTR(&mp_utime_sleep_us_obj)},
-    {MP_ROM_QSTR(MP_QSTR_ticks_ms), MP_ROM_PTR(&mp_utime_ticks_ms_obj)},
-    {MP_ROM_QSTR(MP_QSTR_ticks_us), MP_ROM_PTR(&mp_utime_ticks_us_obj)},
-    {MP_ROM_QSTR(MP_QSTR_ticks_cpu), MP_ROM_PTR(&mp_utime_ticks_cpu_obj)},
-    {MP_ROM_QSTR(MP_QSTR_ticks_add), MP_ROM_PTR(&mp_utime_ticks_add_obj)},
-    {MP_ROM_QSTR(MP_QSTR_ticks_diff), MP_ROM_PTR(&mp_utime_ticks_diff_obj)},
+    {MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&mp_time_sleep_obj)},
+    {MP_ROM_QSTR(MP_QSTR_sleep_ms), MP_ROM_PTR(&mp_time_sleep_ms_obj)},
+    {MP_ROM_QSTR(MP_QSTR_sleep_us), MP_ROM_PTR(&mp_time_sleep_us_obj)},
+    {MP_ROM_QSTR(MP_QSTR_ticks_ms), MP_ROM_PTR(&mp_time_ticks_ms_obj)},
+    {MP_ROM_QSTR(MP_QSTR_ticks_us), MP_ROM_PTR(&mp_time_ticks_us_obj)},
+    {MP_ROM_QSTR(MP_QSTR_ticks_cpu), MP_ROM_PTR(&mp_time_ticks_cpu_obj)},
+    {MP_ROM_QSTR(MP_QSTR_ticks_add), MP_ROM_PTR(&mp_time_ticks_add_obj)},
+    {MP_ROM_QSTR(MP_QSTR_ticks_diff), MP_ROM_PTR(&mp_time_ticks_diff_obj)},
 };
 
 STATIC MP_DEFINE_CONST_DICT(time_module_globals, time_module_globals_table);
diff --git a/core/mocks/generated/uio.pyi b/core/mocks/generated/uio.pyi
deleted file mode 120000
index ac036f48..00000000
--- a/core/mocks/generated/uio.pyi
+++ /dev/null
@@ -1 +0,0 @@
-../uio.pyi
\ No newline at end of file
diff --git a/core/mocks/generated/uos.pyi b/core/mocks/generated/uos.pyi
deleted file mode 120000
index c5cae7aa..00000000
--- a/core/mocks/generated/uos.pyi
+++ /dev/null
@@ -1 +0,0 @@
-../uos.pyi
\ No newline at end of file
diff --git a/core/mocks/generated/ustruct.pyi b/core/mocks/generated/ustruct.pyi
deleted file mode 120000
index a3dbad3e..00000000
--- a/core/mocks/generated/ustruct.pyi
+++ /dev/null
@@ -1 +0,0 @@
-../ustruct.pyi
\ No newline at end of file
diff --git a/core/mocks/uio.pyi b/core/mocks/uio.pyi
deleted file mode 100644
index 6cf1e651..00000000
--- a/core/mocks/uio.pyi
+++ /dev/null
@@ -1,16 +0,0 @@
-class FileIO:
-    def __enter__(self) -> FileIO: ...
-
-    def __exit__(*args) -> None: ...
-
-    def write(self, data: bytes | str) -> int: ...
-
-class StringIO:
-    def __init__(self, _: int | str) -> None: ...
-
-class BytesIO:
-    def __init__(self, _: int | bytes) -> None: ...
-    def getvalue(self) -> bytes: ...
-
-def open(name: str, mode: str = ...) -> FileIO:
-    pass
diff --git a/core/mocks/uos.pyi b/core/mocks/uos.pyi
deleted file mode 100644
index 9fb4e3a8..00000000
--- a/core/mocks/uos.pyi
+++ /dev/null
@@ -1 +0,0 @@
-def getenv(env: str) -> str: ...
diff --git a/core/mocks/ustruct.pyi b/core/mocks/ustruct.pyi
deleted file mode 100644
index 99821c2c..00000000
--- a/core/mocks/ustruct.pyi
+++ /dev/null
@@ -1,8 +0,0 @@
-from typing import *
-from buffer_types import *
-
-def calcsize(fmt: str) -> int: ...
-def pack(fmt: str, *args: Any) -> bytes: ...
-def pack_into(fmt: str, buffer: AnyBuffer, offset: int, *args: Any) -> None: ...
-def unpack(fmt: str, data: AnyBytes) -> Tuple: ...
-def unpack_from(fmt: str, data: AnyBytes, offset: int = ...) -> Tuple: ...
diff --git a/core/src/apps/bitcoin/sign_tx/omni.py b/core/src/apps/bitcoin/sign_tx/omni.py
index 9e840b92..9aebe0d4 100644
--- a/core/src/apps/bitcoin/sign_tx/omni.py
+++ b/core/src/apps/bitcoin/sign_tx/omni.py
@@ -20,7 +20,7 @@ def is_valid(data: AnyBytes) -> bool:
 
 
 def parse(data: AnyBytes) -> str:
-    from ustruct import unpack
+    from struct import unpack
 
     from trezor import TR
     from trezor.strings import format_amount, format_amount_unit
diff --git a/core/src/apps/bitcoin/sign_tx/zcash_v4.py b/core/src/apps/bitcoin/sign_tx/zcash_v4.py
index 3b69bfe2..b036110b 100644
--- a/core/src/apps/bitcoin/sign_tx/zcash_v4.py
+++ b/core/src/apps/bitcoin/sign_tx/zcash_v4.py
@@ -51,7 +51,7 @@ class Zip243SigHasher:
         coin: CoinInfo,
         hash_type: int,
     ) -> bytes:
-        import ustruct as struct
+        import struct
 
         from ..scripts import write_bip143_script_code_prefixed
         from ..writers import get_tx_hash, write_bytes_fixed
diff --git a/core/src/apps/common/cbor.py b/core/src/apps/common/cbor.py
index 0db1ab27..cd4ddcbc 100644
--- a/core/src/apps/common/cbor.py
+++ b/core/src/apps/common/cbor.py
@@ -51,7 +51,7 @@ _CBOR_SET_TAG = const(0x102)  # Tag 258
 
 
 def _header(typ: int, l: int) -> bytes:
-    from ustruct import pack
+    from struct import pack
 
     if l < 24:
         return pack(">B", typ + l)
diff --git a/core/src/apps/misc/sign_identity.py b/core/src/apps/misc/sign_identity.py
index 54c90c94..edbb0f15 100644
--- a/core/src/apps/misc/sign_identity.py
+++ b/core/src/apps/misc/sign_identity.py
@@ -91,7 +91,7 @@ def serialize_identity_without_proto(identity: IdentityType) -> str:
 
 
 def get_identity_path(identity: str, index: int, num: int) -> Bip32Path:
-    from ustruct import pack, unpack
+    from struct import pack, unpack
 
     from apps.common.paths import HARDENED
 
diff --git a/core/src/apps/stellar/helpers.py b/core/src/apps/stellar/helpers.py
index 1d877aaf..189b8cf2 100644
--- a/core/src/apps/stellar/helpers.py
+++ b/core/src/apps/stellar/helpers.py
@@ -88,7 +88,7 @@ def _crc16_checksum(data: AnyBytes) -> bytes:
 
     Initial value changed to 0x0000 to match Stellar configuration.
     """
-    import ustruct
+    import struct
 
     crc = 0x0000
     polynomial = 0x1021
@@ -101,4 +101,4 @@ def _crc16_checksum(data: AnyBytes) -> bytes:
             if c15 ^ bit:
                 crc ^= polynomial
 
-    return ustruct.pack("<H", crc & 0xFFFF)
+    return struct.pack("<H", crc & 0xFFFF)
diff --git a/core/src/apps/webauthn/credential.py b/core/src/apps/webauthn/credential.py
index 0193344d..3ae76eee 100644
--- a/core/src/apps/webauthn/credential.py
+++ b/core/src/apps/webauthn/credential.py
@@ -1,4 +1,4 @@
-import ustruct
+import struct
 from micropython import const
 from typing import TYPE_CHECKING
 
@@ -306,7 +306,7 @@ class Fido2Credential(Credential):
 
     def _private_key(self) -> bytes:
         path = [HARDENED | 10022, HARDENED | int.from_bytes(self.id[:4], "big")] + [
-            HARDENED | i for i in ustruct.unpack(">4L", self.id[-16:])
+            HARDENED | i for i in struct.unpack(">4L", self.id[-16:])
         ]
         node = seed.derive_node_without_passphrase(path, _CURVE_NAME[self.curve])
         return node.private_key()
@@ -423,7 +423,7 @@ class U2fCredential(Credential):
         self.node = seed.derive_node_without_passphrase(nodepath, "nist256p1")
 
         # first half of keyhandle is keypath
-        keypath = ustruct.pack("<8L", *path)
+        keypath = struct.pack("<8L", *path)
 
         # second half of keyhandle is a hmac of rp_id_hash and keypath
         mac = hmac(hmac.SHA256, self.node.private_key(), self.rp_id_hash)
@@ -472,7 +472,7 @@ class U2fCredential(Credential):
 
         # unpack the keypath from the first half of keyhandle
         keypath = keyhandle[:32]
-        path = ustruct.unpack(pathformat, keypath)
+        path = struct.unpack(pathformat, keypath)
 
         # check high bit for hardened keys
         for i in path:
diff --git a/core/src/apps/webauthn/fido2.py b/core/src/apps/webauthn/fido2.py
index a579223e..fb2a82b4 100644
--- a/core/src/apps/webauthn/fido2.py
+++ b/core/src/apps/webauthn/fido2.py
@@ -1,5 +1,5 @@
+import struct
 import uctypes
-import ustruct
 import utime
 from micropython import const
 from typing import TYPE_CHECKING
@@ -1421,7 +1421,7 @@ def _msg_authenticate_sign(
 
     # get next counter
     ctr = cred.next_signature_counter()
-    ctrbuf = ustruct.pack(">L", ctr)
+    ctrbuf = struct.pack(">L", ctr)
 
     # sign the input data together with counter
     sig = cred.sign((rp_id_hash, flags, ctrbuf, challenge))
@@ -1437,15 +1437,15 @@ def _msg_authenticate_sign(
 
 
 def msg_error(cid: int, code: int) -> Cmd:
-    return Cmd(cid, _CMD_MSG, ustruct.pack(">H", code))
+    return Cmd(cid, _CMD_MSG, struct.pack(">H", code))
 
 
 def cmd_error(cid: int, code: int) -> Cmd:
-    return Cmd(cid, _CMD_ERROR, ustruct.pack(">B", code))
+    return Cmd(cid, _CMD_ERROR, struct.pack(">B", code))
 
 
 def cbor_error(cid: int, code: int) -> Cmd:
-    return Cmd(cid, _CMD_CBOR, ustruct.pack(">B", code))
+    return Cmd(cid, _CMD_CBOR, struct.pack(">B", code))
 
 
 def credentials_from_descriptor_list(
diff --git a/core/src/prof/__main__.py b/core/src/prof/__main__.py
index cc3240a3..4f64c570 100644
--- a/core/src/prof/__main__.py
+++ b/core/src/prof/__main__.py
@@ -1,10 +1,10 @@
 import micropython
 import sys
+from io import open
+from os import getenv
 from typing import TYPE_CHECKING, Any, Callable, TypeAlias
 
 import coveragedata
-from uio import open
-from uos import getenv
 
 if TYPE_CHECKING:
     from types import FrameType
diff --git a/core/src/trezor/crypto/base32.py b/core/src/trezor/crypto/base32.py
index 575a195b..ef4d5a36 100644
--- a/core/src/trezor/crypto/base32.py
+++ b/core/src/trezor/crypto/base32.py
@@ -14,7 +14,7 @@ _b32rev = {ord(v): k for k, v in enumerate(_b32alphabet)}
 
 
 def encode(s: AnyBytes) -> str:
-    from ustruct import unpack
+    from struct import unpack
 
     s = bytes(s)
     quanta, leftover = divmod(len(s), 5)
diff --git a/core/src/trezor/utils.py b/core/src/trezor/utils.py
index 3add64b3..f8810d02 100644
--- a/core/src/trezor/utils.py
+++ b/core/src/trezor/utils.py
@@ -89,10 +89,10 @@ if __debug__:
         from trezorutils import estimate_unused_stack, zero_unused_stack  # noqa: F401
 
     if EMULATOR:
-        import uos
+        import os
 
-        DISABLE_ANIMATION = uos.getenv("TREZOR_DISABLE_ANIMATION") == "1"
-        LOG_MEMORY = uos.getenv("TREZOR_LOG_MEMORY") == "1"
+        DISABLE_ANIMATION = os.getenv("TREZOR_DISABLE_ANIMATION") == "1"
+        LOG_MEMORY = os.getenv("TREZOR_LOG_MEMORY") == "1"
     else:
         from trezorutils import DISABLE_ANIMATION
 
diff --git a/core/src/trezor/wire/codec/codec_v1.py b/core/src/trezor/wire/codec/codec_v1.py
index 610b58ab..43e0fb67 100644
--- a/core/src/trezor/wire/codec/codec_v1.py
+++ b/core/src/trezor/wire/codec/codec_v1.py
@@ -1,4 +1,4 @@
-import ustruct
+import struct
 from micropython import const
 from typing import TYPE_CHECKING
 
@@ -33,7 +33,7 @@ async def read_message(
     iface.read(report, 0)
     if report[0] != _REP_MARKER:
         raise CodecError("Invalid magic")
-    _, magic1, magic2, mtype, msize = ustruct.unpack(_REP_INIT, report)
+    _, magic1, magic2, mtype, msize = struct.unpack(_REP_INIT, report)
     if magic1 != _REP_MAGIC or magic2 != _REP_MAGIC:
         raise CodecError("Invalid magic")
 
@@ -88,7 +88,7 @@ async def write_message(iface: WireInterface, mtype: int, mdata: AnyBytes) -> No
     # prepare the report buffer with header data
     report = bytearray(iface.TX_PACKET_LEN)
     repofs = _REP_INIT_DATA
-    ustruct.pack_into(
+    struct.pack_into(
         _REP_INIT, report, 0, _REP_MARKER, _REP_MAGIC, _REP_MAGIC, mtype, msize
     )
 
diff --git a/core/src/trezor/wire/thp/memory_manager.py b/core/src/trezor/wire/thp/memory_manager.py
index 6b5eba54..a8aa3d04 100644
--- a/core/src/trezor/wire/thp/memory_manager.py
+++ b/core/src/trezor/wire/thp/memory_manager.py
@@ -1,6 +1,6 @@
 from micropython import const
+from struct import pack_into
 from typing import TYPE_CHECKING
-from ustruct import pack_into
 
 from trezor import protobuf, wire
 from trezorthp import APP_HEADER_LEN, SEND_BUFFER_OVERHEAD
diff --git a/core/tests/test_trezor.wire.codec.codec_v1.py b/core/tests/test_trezor.wire.codec.codec_v1.py
index 08be3807..46c5e305 100644
--- a/core/tests/test_trezor.wire.codec.codec_v1.py
+++ b/core/tests/test_trezor.wire.codec.codec_v1.py
@@ -1,7 +1,7 @@
 # flake8: noqa: F403,F405
 from common import *  # isort:skip
 
-import ustruct
+import struct
 
 from mock_wire_interface import MockHID
 from trezor import io
@@ -11,11 +11,11 @@ from trezor.wire.protocol_common import WireError
 
 MESSAGE_TYPE = 0x4242
 
-HEADER_PAYLOAD_LENGTH = MockHID.RX_PACKET_LEN - 3 - ustruct.calcsize(">HL")
+HEADER_PAYLOAD_LENGTH = MockHID.RX_PACKET_LEN - 3 - struct.calcsize(">HL")
 
 
 def make_header(mtype, length):
-    return b"?##" + ustruct.pack(">HL", mtype, length)
+    return b"?##" + struct.pack(">HL", mtype, length)
 
 
 class TestWireCodecV1(unittest.TestCase):
diff --git a/pyproject.toml b/pyproject.toml
index 702b9f0a..8886c9da 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -91,7 +91,6 @@ profile = "black"
 extra_standard_library = [
   "buffer_types",
   "micropython",
-  "ustruct",
   "uctypes",
   "utime",
   "timeq",