TZ
← All projectsTrezor

Trezor firmware

Firmware monorepo for Trezor One, Model T, and Safe devices.

BitcoinHardware walletsNormal
Repository coverage

2665 commits in the local evidence base

Every captured commit receives deterministic security triage and a separate communication-quality score. Security candidates and broader second-pass signals receive full-patch Ollama analysis.

919security candidates311second-pass queue2658AI analyses
332commits · 30 days
562commits · 60 days
1366commits · 180 days
2648commits · 365 days
Backfill bands
Aug 5 → Feb 61298 seen115 candidatesComplete
Feb 6 → Jun 6775 seen58 candidatesComplete
Jun 6 → Jul 6217 seen13 candidatesComplete
Jul 6 → Aug 5360 seen54 candidatesComplete
Commit communication

Does the history explain itself?

Message quality measures whether a commit identifies its scope, purpose, rationale, testing, and supporting references. It does not change the security-severity score.

66/100 average clarity
476Strong · 80–100
1321Adequate · 60–79
863Thin · 40–59
5Opaque · 0–39
Read the scoring rubric →
Developer activity

Who is changing the project?

Public Git author strings; identities are not independently verified.

DeveloperCommitsCandidatesAnalyzedHigh riskMessage avg.
tychovrahe292104292461
Roman Zeyde575179573271
PrisionMike945994273
Andrew Kozlik712470265
obrusvit21376213164
Jakub Janků22919182
Martin Pastyřík23823173
cepetr19682196059
Ioan Bizău23076230059
M1nd3r20772207071
Lukas Bielesch846784067
Martin Milata17446174063
Analysis record

Published AI watches

Last scanned 2 minutes ago

Low 27 AI analysisMessage 93 · Strong
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(core): digest EIP-1559/EIP-7702 magic without RLP encoding

This commit is a small internal cleanup in Trezor's Ethereum signing code. It changes how two special 'magic' bytes (the transaction type markers for newer Ethereum transaction formats) are fed into the cryptographic hash. Previously the c…

Refactor of cryptographic hashing path for Ethereum transaction signingRemoval of implicit assumption that RLP encodes small integers as single bytesChange affects EIP-1559 and EIP-7702 transaction type markers
2362bc6fby Roman Zeyde+6−32 files
No security note in commit
Informational 15 AI analysisMessage 98 · Strong
TZ TrezorTrezor firmware BitcoinHardware wallets

test(core): test RLP self-encoding bytestrings

This commit only adds a new unit test to the Trezor firmware codebase. It verifies that very short Ethereum RLP-encoded byte strings and small positive integers encode to themselves, which is a known property of the RLP specification. No p…

41538733by Roman Zeyde+16−01 file
No security note in commit
Informational 18 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

chore(core): remove sha1 from regular FW

This commit removes the SHA-1 hashing function from the regular Trezor firmware. SHA-1 is an old, weak hash algorithm that is no longer considered secure for sensitive uses. The change deletes the code that exposes SHA-1 to apps running on…

Removal of a deprecated cryptographic primitive (SHA-1) from the firmware API surfaceReduction of attack surface and prevention of future misuse of a collision-vulnerable hashNo direct vulnerability patch or memory-safety bug is present in the diff
16d15774by M1nd3r+0−2006 files
No security note in commit
Low 27 AI analysisMessage 62 · Adequate
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(crypto): pass static public key to `noise_xxpsk3_*_init()`

This commit changes how a cryptographic library sets up secure connections. Previously, the code automatically calculated the public key from the private key. Now, the caller must provide the public key directly. This is a code-quality ref…

Cryptographic key handling changed: public key is now supplied rather than derivedPotential reduction of key-mismatch risk if caller provides correct public keyNew null-pointer check added for static_public_key
1b3128a4by Ondřej Vejpustek+20−92 files
No security note in commit
Informational 15 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(crypto): change order of parameters

This commit simply reorders the arguments of an internal function called dh() and updates every place that calls it. The actual math and security behavior are unchanged; it is a code cleanup with no security effect.

33a119eeby Ondřej Vejpustek+15−151 file
No security note in commit
Informational 15 AI analysisMessage 47 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(crypto): prefix enums

This commit simply renames two groups of internal status labels (called enums) in the Trezor firmware's cryptographic code. The old names like WAITING_FOR_REQUEST1 were shared between two different parts of the code, so the developer gave …

f1c74046by Ondřej Vejpustek+26−222 files
No security note in commit
Low 37 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

fix(crypto): prevent calling `memzero(NULL, ...)`

This commit fixes three places in the Trezor firmware's cryptographic code where a memory-clearing function could be called with a NULL pointer. In practice, passing NULL to memzero is harmless on Trezor's platform (it does nothing), but i…

NULL pointer passed to memory-zeroing helper in cryptographic codeUndefined behavior in C standard library contractDefensive hardening in Noise protocol implementation
0394e934by Ondřej Vejpustek+11−51 file
No security note in commit
Informational 18 AI analysisMessage 62 · Adequate
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(crypto): return remote static key from `noise_xxpsk3_*_handle_*()`

This commit is a code cleanup (refactor) for the cryptographic handshake code used in Trezor devices. It changes how the other party's long-term public key is returned to the caller: instead of storing it inside an internal state structure…

Removal of long-term public key storage from internal handshake stateCaller-supplied output buffer for remote static public key reduces internal secret retentionError-path memzero of returned key material on failure
3ead1aa6by Ondřej Vejpustek+79−423 files
No security note in commit
Informational 15 AI analysisMessage 62 · Adequate
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(xtask): rename ProjectProfile to ProjectConfig

This commit is a simple rename from 'ProjectProfile' to 'ProjectConfig' in two Rust source files. It only changes variable names, struct names, and error messages. There is no change to program logic, security behavior, or how data is hand…

581b37bcby cepetr+18−182 files
No security note in commit
Informational 15 AI analysisMessage 47 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(xtask): introduce ResolvedBuildArgs

This commit is a straightforward internal code refactor in Trezor's build tooling. It introduces a new ResolvedBuildArgs structure that centralizes default values for command-line build options before they are used. There is no change to u…

c24d1be8by cepetr+99−295 files
No security note in commit
Informational 15 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(xtask): make build args tristate

This commit is a straightforward internal refactor of the Trezor firmware build tool's command-line argument handling. It changes many on/off flags from plain booleans to optional booleans so they can explicitly be set to true, false, or l…

271e249aby cepetr+57−561 file
No security note in commit
Informational 15 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(xtask): introduce build options

This commit is a straightforward internal code reorganization in Trezor's build tooling. It moves build-option definitions from one Rust source file to a new module and adds the ability to load those options from a configuration file. Ther…

75085e2aby cepetr+275−2007 files
No security note in commit
Informational 15 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

feat(xtask): introduce build presets

This commit is a developer tooling change for the Trezor firmware build system. It introduces 'build presets'—named configuration bundles stored in TOML files—so developers can select common build settings with a single command-line flag i…

eefe8f7fby cepetr+397−419 files
No security note in commit
Informational 15 AI analysisMessage 62 · Adequate
TZ TrezorTrezor firmware BitcoinHardware wallets

feat(xtask): upgrade manifest.yaml for tf-tools 0.3.0

This commit is a routine update to a build-system manifest file used by Trezor's internal tooling. It reorganizes and re-labels feature flags (for example, moving options between 'Features', 'Debugging', and 'Signing' groups and simplifyin…

57b28b89by cepetr+86−1351 file
No security note in commit
Informational 15 AI analysisMessage 62 · Adequate
TZ TrezorTrezor firmware BitcoinHardware wallets

feat(core): add tf-tools 0.3.1+ configuration file

This commit adds a single configuration file for a Trezor developer tool (a VS Code extension). It only points the tool to existing folders in the repository and contains no executable code, no secrets, and no changes to firmware behavior.…

e554f618by cepetr+8−01 file
No security note in commit
Informational 15 AI analysisMessage 62 · Adequate
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(xtask): rename ResolvedBuild to ResolvedBuildFeatures

This commit is a simple internal code cleanup: it renames a Rust data structure called ResolvedBuild to ResolvedBuildFeatures and updates the places that use it. There are no functional changes, no security fixes, and no changes to how the…

aaa2780bby cepetr+5−52 files
No security note in commit
Informational 15 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

fix(core): fix up clippy warnings in storage.rs

This is a tiny code cleanup commit that replaces two calls to `ptr::null()` with Rust's `unwrap_or_default()` to silence automated Clippy lint warnings. It does not change what value is produced (still a null pointer when no salt is provid…

62354461by cepetr+2−21 file
No security note in commit
Informational 15 AI analysisMessage 47 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(xtask): simplify dependencies

This commit is a straightforward internal code cleanup in Trezor's build tooling. It moves a data structure and two helper methods from one Rust source file to another and updates callers accordingly. There is no change to user-facing beha…

6268349fby cepetr+9−193 files
No security note in commit
Informational 15 AI analysisMessage 47 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

docs: add xtask documentation

This commit only adds documentation. It updates the table of contents and adds a new markdown page plus a diagram explaining the project's 'xtask' build helper. No code, build scripts, or firmware logic was changed, so it cannot introduce …

4879dababy cepetr+296−03 files
No security note in commit
Informational 17 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

feat(xtask): introduce project-toml build-options

This commit is a build-system refactoring for Trezor firmware. It moves the mapping of command-line build options to Rust/cargo features out of hard-coded Rust logic and into per-project TOML files. It also adds a small change so debug bui…

Build-option mapping now lives in project.toml files, increasing the attack surface for supply-chain/build-configuration tamperingMakefile change automatically enables debug-link for PYOPT=0 debug buildsValidation added to reject storage_insecure_testing_mode in production builds
d44de007by cepetr+681−40817 files
No security note in commit
Repository ledger

Explore captured commits

Expand any commit for its author, full message, clarity score, changed files, triage signals, analysis, and source link.

Lower-prioritychore(prodtest): Disable maintenance mode in Tropic R-configby Andrew Kozlik · 09dea51a · Mar 19, 2026 · 1 fileMessage 77 · AdequateModerate 57Details
Commit message · Andrew Kozlik

chore(prodtest): Disable maintenance mode in Tropic R-config

(cherry picked from commit bbac55da0a74361c373b8aedc058f715d2cbee13)

77/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body
AI analysis · Moderate 57/100

This commit changes a production-test configuration for the Tropic secure chip so that 'maintenance mode' is disabled before the chip leaves the factory. Maintenance mode is typically a special low-level access mode used during manufacturing and testing; leaving it enabled in shipped devices could let someone with physical access or specialized tools perform operations that should not be allowed in the field. The change is a hardening step, not a fix for an actively exploited bug.

Lower-prioritychore: update signed secmonby Roman Zeyde · e1cfddd1 · Mar 19, 2026 · 1 fileMessage 62 · AdequateInformational 3Details
Commit message · Roman Zeyde

chore: update signed secmon

Built from 764df17

(cherry picked from commit 725c0c01879329900f08fc453d8fd0fcb4d86090)

62/100 · AdequateMessage clarity
✓ Descriptive subject✓ Uses a recognizable type or scope✓ Provides an explanatory body
AI analysis · Informational 3/100

This commit replaces a binary firmware component called 'secmon.bin' for the T3W1 hardware model. The change is a pre-built binary blob with no source diff, so from the commit alone we cannot tell what security relevance, if any, the update has.

Lower-prioritychore: update definitions timestampby Roman Zeyde · 5e8419c0 · Mar 19, 2026 · 2 filesMessage 62 · AdequateInformational 15Details
Commit message · Roman Zeyde

chore: update definitions timestamp

[no changelog]

(cherry picked from commit db66a275348fc5da87e0ad6664a6917e54fe9f71)

62/100 · AdequateMessage clarity
✓ Descriptive subject✓ Uses a recognizable type or scope✓ Provides an explanatory body
AI analysis · Informational 15/100

This commit simply updates a timestamp and a matching minimum-data-version number used for Ethereum token and network definitions. It is a routine metadata refresh with no visible security relevance.

AI review queuedchore(core): sign translationsby Roman Zeyde · e64457a0 · Mar 19, 2026 · 1 fileMessage 62 · AdequateInformational 15Details
Commit message · Roman Zeyde

chore(core): sign translations

[no changelog]

(cherry picked from commit 3d00dda8027a945857f1c3869601c035e96deaee)

62/100 · AdequateMessage clarity
✓ Descriptive subject✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
signing or wallet pathtranslation-only discountsecond-pass: security-sensitive path
AI analysis · Informational 15/100

This commit simply adds a new cryptographic signature entry to a JSON file that records approved translation bundles for the Trezor hardware wallet. There is no code change, no bug fix, and no visible security issue in the diff itself.

Lower-prioritydocs(core/prodtest): changelog for 0.3.6by Roman Zeyde · 61fb09a4 · Mar 19, 2026 · 9 filesMessage 80 · StrongInformational 15Details
Commit message · Roman Zeyde

docs(core/prodtest): changelog for 0.3.6

```
tools/changelog.py generate --date "18th March 2026" core/embed/projects/prodtest 0.3.6
```

[no changelog]

(cherry picked from commit 725080c103c4f2e174a04fb13db17f285b5b1440)

80/100 · StrongMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context
AI analysis · Informational 15/100

This commit is purely a documentation change: it generates the release notes (changelog) for version 0.3.6 of Trezor's internal production-test firmware. No program code was modified, so it cannot by itself introduce or fix a security vulnerability.

Lower-priorityfix(core): fix bug in multisig verification.by Andrew Kozlik · ab9b4fea · Mar 19, 2026 · 3 filesMessage 82 · StrongModerate 60Details
Commit message · Andrew Kozlik

fix(core): fix bug in multisig verification.

(cherry picked from commit bf4775e2a7bf74916585197501a6f70c24b90449)

82/100 · StrongMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body✓ Mentions testing or verification
Why it was queued
defensive validation
AI analysis · Moderate 60/100

This update fixes a bug in how Trezor verifies ownership proofs for Bitcoin multisig wallets. Before the fix, a malicious or malformed proof could reuse the same valid signature twice and trick the device into accepting it as if two different keys had signed. The fix ensures each signature is checked against a distinct public key, so duplicate signatures are correctly rejected. The vendor marks this as a security fix.

Lower-prioritychore(core): update UI fixturesby Roman Zeyde · 2afc26fe · Mar 19, 2026 · 1 fileMessage 57 · ThinInformational 15Details
Commit message · Roman Zeyde

chore(core): update UI fixtures

[no changelog]

57/100 · ThinMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope! No meaningful explanatory body
AI analysis · Informational 15/100

This commit only updates the expected visual test snapshots (called UI fixtures) for the Trezor hardware wallet firmware. It changes thousands of hash values in a single test data file, but does not modify any actual firmware code, wallet logic, or user-facing behavior. There is no security-relevant change in this commit itself.

Lower-prioritydocs(core): changelog for 2.10.1by Roman Zeyde · 47950dd3 · Mar 19, 2026 · 17 filesMessage 80 · StrongHigh 73Details
Commit message · Roman Zeyde

docs(core): changelog for 2.10.1

```
tools/changelog.py generate --date "18th March 2026" core 2.10.1
```

[no changelog]

(cherry picked from commit 5981eb20e85a792830e8f8a5fc38d21db8fb46ea)

80/100 · StrongMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context
AI analysis · High 73/100

This commit is a documentation-only changelog update for the Trezor firmware 2.10.1 release. It does not change any source code, but it lists two security fixes included in the release: one for Ethereum transaction hashing and one for multisignature (multisig) verification. Because the actual code changes are not in this commit, we cannot directly assess how severe the bugs are, but the vendor labels them as security issues affecting a hardware wallet that protects cryptocurrency funds.

Security candidatefix(crypto): Avoid caching uncacheable nodes in bip32.cby Andrew Kozlik · 26914ff4 · Mar 19, 2026 · 2 filesMessage 77 · AdequateModerate 68Details
Commit message · Andrew Kozlik

fix(crypto): Avoid caching uncacheable nodes in bip32.c

[no changelog]

(cherry picked from commit 88441bdb4fbcc1ba2b7539f9f8d1c02255185fa3)

77/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
secret or key materialcryptography-sensitive path
AI analysis · Moderate 68/100

This commit fixes a memory corruption bug in the code that caches Bitcoin-style key derivation paths inside Trezor's cryptographic library. When a derivation path was too deep to be cached, the code could store the derived key under the wrong path label. Later, a wallet or app asking for a different deep path could receive the wrong private key, which could lead to sending funds to an attacker-controlled address or signing with the wrong key. The fix stops the cache from storing these too-deep paths, and a new test confirms the wrong-key behavior no longer happens.

Security candidatedocs(legacy): changelog for 1.14.1by Roman Zeyde · 1ad1d9fc · Mar 19, 2026 · 4 filesMessage 80 · StrongInformational 15Details
Commit message · Roman Zeyde

docs(legacy): changelog for 1.14.1

```
tools/changelog.py generate --date "18th March 2026" legacy/firmware 1.14.1
```

[no changelog]

(cherry picked from commit 5f71c3b016c1bfb88391ace924b16177773ee87e)

80/100 · StrongMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context
Why it was queued
boot or update path
AI analysis · Informational 15/100

This commit only updates the written changelog for Trezor legacy firmware version 1.14.1. It deletes three small draft changelog entries and adds their text to the published CHANGELOG.md file. No program code, firmware logic, or security behavior is changed. The security note about warning on long Ethereum data is a documentation of a prior change, not a new fix in this commit.

Security candidatedocs(legacy): update changelog for 1.14.1by Roman Zeyde · 0ca2e650 · Mar 19, 2026 · 2 filesMessage 80 · StrongLow 41Details
Commit message · Roman Zeyde

docs(legacy): update changelog for 1.14.1

```
tools/changelog.py generate --date "18th March 2026" legacy/firmware 1.14.1
```

[no changelog]

(cherry picked from commit 78d928b4d3dee0bc2b4f8d7e5098468ba982da6f)

80/100 · StrongMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context
Why it was queued
boot or update path
AI analysis · Low 41/100

This commit is a documentation-only update that moves a changelog entry into the public release notes for Trezor legacy firmware version 1.14.1. The entry says the firmware now 'Enforce advanced recovery for mnemonics shorter than 24 words.' That wording suggests a prior security weakness: shorter seed phrases may have been recoverable using a simpler, possibly less secure method. However, the actual code change is not present in this commit, so we can only see the vendor's description of a fix, not the fix itself or how it could be attacked.

AI review queuedfix(core): confirm Ethereum data during its hashingby Roman Zeyde · 70c9b0c0 · Mar 19, 2026 · 7 filesMessage 77 · AdequateHigh 72Details
Commit message · Roman Zeyde

fix(core): confirm Ethereum data during its hashing

(cherry picked from commit 09ab831c4eaced4e1702dd74cc6713e0b0f5975d)

77/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
signing or wallet pathsecond-pass: security-sensitive path
AI analysis · High 72/100

This update changes how Trezor hardware wallets confirm Ethereum transaction data. Previously, the device asked the user to approve the entire data payload before it began hashing the transaction. Now, it confirms data piece by piece while the transaction is being hashed, and only shows the final transaction summary right before signing. The change is marked as a security fix in the project's changelog, suggesting the old behavior could let a user approve data that does not match what is actually signed.

AI review queuedrefactor: stellar confirmationsby Ioan Bizău · 663569c4 · Mar 19, 2026 · 4 filesMessage 62 · AdequateLow 32Details
Commit message · Ioan Bizău

refactor: stellar confirmations

[no changelog]

(cherry picked from commit a7f5e7200f49b390c65940638900f071258207b4)

62/100 · AdequateMessage clarity
✓ Descriptive subject✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
signing or wallet pathsecond-pass: security-sensitive path
AI analysis · Low 32/100

This commit refactors how Trezor handles Stellar cryptocurrency transaction confirmations when a 'payment request' is used. Previously, the device might skip confirming individual operations during payment requests. The change ensures that only simple payment operations are allowed in payment requests, rejects invalid operation types, and still requires user confirmation. It also adds a test case for an invalid operation in a payment request. The commit appears to be a defensive hardening change rather than a fix for an active exploit.

Security candidatechore: update signed bootloadersby Roman Zeyde · d86e4e3b · Mar 19, 2026 · 10 filesMessage 62 · AdequateInformational 3Details
Commit message · Roman Zeyde

chore: update signed bootloaders

Built from 764df17

(cherry picked from commit a05292a7bd7a4174da1ef1f884306e9831104318)

62/100 · AdequateMessage clarity
✓ Descriptive subject✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
update trustboot or update path
AI analysis · Informational 3/100

This commit replaces pre-built bootloader binary files for several Trezor hardware wallet models and updates their recorded cryptographic hashes. The change is presented as a routine version bump from older bootloader versions to version 2.1.16.0. The actual code inside the new bootloader binaries cannot be inspected from this commit, and there is no statement that the update fixes a security problem. On its own, this is a normal maintenance action rather than evidence of a vulnerability.

Security candidatechore: add QA bootloadersby Roman Zeyde · 2479f822 · Mar 19, 2026 · 10 filesMessage 62 · AdequateInformational 15Details
Commit message · Roman Zeyde

chore: add QA bootloaders

(cherry picked from commit 09ead126b0fbc55493a9a0bdd16dd7020a1edd21)

62/100 · AdequateMessage clarity
✓ Descriptive subject✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
update trustboot or update path
AI analysis · Informational 15/100

This commit updates the embedded QA (quality assurance) bootloader binaries and their recorded cryptographic hashes for five Trezor hardware wallet models. QA bootloaders are internal test artifacts, not the production bootloaders shipped to end users. There is no indication in the commit that this fixes or introduces a security vulnerability.

Security candidatedocs(core/bootloader): changelog for 2.1.16by Roman Zeyde · e091b078 · Mar 19, 2026 · 5 filesMessage 88 · StrongInformational 15Details
Commit message · Roman Zeyde

docs(core/bootloader): changelog for 2.1.16

```
tools/changelog.py generate --date "18th March 2026" core/embed/projects/bootloader 2.1.16
```
Also, updated #6244-related entry.

[no changelog]

(cherry picked from commit c665c45eb0084d50789098d5b25c2a8baea284e9)

88/100 · StrongMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context✓ Links an issue, advisory, or supporting reference
Why it was queued
update trustboot or update path
AI analysis · Informational 15/100

This commit is purely a documentation update: it generates the official changelog for bootloader version 2.1.16 and moves four pending changelog snippets into the published CHANGELOG.md file. No source code, firmware logic, or security behavior is changed.

Security candidatefix(legacy): warn if Ethereum data is too longby Roman Zeyde · 33d3de9b · Mar 19, 2026 · 4 filesMessage 72 · AdequateModerate 51Details
Commit message · Roman Zeyde

fix(legacy): warn if Ethereum data is too long

(cherry picked from commit e95cb8332511f533c6f053192d2cb37a5c55d85d)

72/100 · AdequateMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
signing or wallet pathboot or update path
AI analysis · Moderate 51/100

This update changes how older Trezor devices (the 'legacy' T1B1 model) display long Ethereum transaction data before signing. Previously, the device only showed one screen of data, which could hide malicious content appended later in the same transaction. Now it shows up to five pages of data, and if there is still more data left, it shows a clear warning telling the user that not all data can be viewed and to proceed with caution. This is a security improvement that reduces the chance of a user approving a transaction whose full contents they have not seen.

Security candidatefix(legacy): Enforce matrix recovery for mnemonics under 24 words.by Andrew Kozlik · 3b0cf662 · Mar 19, 2026 · 7 filesMessage 77 · AdequateModerate 59Details
Commit message · Andrew Kozlik

fix(legacy): Enforce matrix recovery for mnemonics under 24 words.

(cherry picked from commit 203090ae53d763c5777813fbf5c05b8ddf8a2813)

77/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
cryptography-sensitive pathboot or update path
AI analysis · Moderate 59/100

This update changes how older Trezor devices (the 'legacy' models) restore a wallet from a recovery phrase. Previously, users could type in each word directly in order ('ScrambledWords'). Now, for phrases shorter than 24 words, the device requires the more secure 'matrix' method unless the user has deliberately lowered safety checks. The change is meant to reduce the risk that malware on a computer can spy on or manipulate the recovery words during wallet restore.

Security candidatedocs(legacy): unify 1.14.1 changelog entriesby Roman Zeyde · d7a0a765 · Mar 19, 2026 · 1 fileMessage 72 · AdequateInformational 15Details
Commit message · Roman Zeyde

docs(legacy): unify 1.14.1 changelog entries

[no changelog]

(cherry picked from commit 8b2faf1498647f3bbe5f0fe2b633134471cc5e04)

72/100 · AdequateMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body
Why it was queued
boot or update pathdocumentation-only discount
AI analysis · Informational 15/100

This commit only reorganizes existing text in a changelog file. It moves one security-related bullet point from a standalone 'Security' section into another 'Security' section lower down, with no changes to actual firmware code or behavior. There is no functional change to review from a security perspective.

Lower-priorityci(core): report debuglink/normal artifact sizes separatelyby Roman Zeyde · 7865571f · Mar 18, 2026 · 1 fileMessage 62 · AdequateInformational 15Details
Commit message · Roman Zeyde

ci(core): report debuglink/normal artifact sizes separately

[no changelog]

62/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope! No meaningful explanatory body
Why it was queued
documentation-only discount
AI analysis · Informational 15/100

This commit changes a GitHub Actions CI workflow so that firmware artifact sizes are reported separately for 'normal' and 'debuglink' builds instead of being merged into one list. It is purely a reporting/visibility tweak in the build pipeline and does not touch any firmware code, cryptography, or device behavior.

Security candidatefeat(core): introduce DebugLink-based N4W1 emulatorby Roman Zeyde · 9cd47e15 · Mar 18, 2026 · 6 filesMessage 62 · AdequateInformational 21Details
Commit message · Roman Zeyde

feat(core): introduce DebugLink-based N4W1 emulator

[no changelog]

62/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope! No meaningful explanatory body
Why it was queued
boot or update path
AI analysis · Informational 21/100

This commit adds a developer-only mock/emulator for a new hardware component called N4W1. It is gated behind debug builds (PYOPT='0') and only for the T3W1 device model. It does not change normal user-facing wallet behavior; it only provides a way for engineers to simulate the N4W1 chip during testing.

Security candidatefeat(common): introduce DebugLink-based N4W1 emulator messagesby Roman Zeyde · 584740c8 · Mar 18, 2026 · 10 filesMessage 62 · AdequateInformational 20Details
Commit message · Roman Zeyde

feat(common): introduce DebugLink-based N4W1 emulator messages

[no changelog]

62/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope! No meaningful explanatory body
Why it was queued
boot or update path
AI analysis · Informational 20/100

This commit only adds new message definitions for a debug-only feature called N4W1 emulator. It does not change any firmware logic, cryptographic code, or user-facing behavior. The messages are marked as DebugLink traffic, which is intended for testing and emulator use, not for production devices. There is no direct security vulnerability visible in this change, but adding debug interfaces always slightly increases the attack surface if those interfaces are accidentally reachable in production.

Security candidatefix(eckhart): improve haptics in scrollable menuby obrusvit · 0d65b4a4 · Mar 18, 2026 · 4 filesMessage 80 · StrongInformational 15Details
Commit message · obrusvit

fix(eckhart): improve haptics in scrollable menu

- if the menu is scrollable (i.e. buttons don't fit on the page) the
haptics is postponed to the actual click (TouchEnd) rather than placing
the finger there (TouchStart)

80/100 · StrongMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context
Why it was queued
boot or update path
AI analysis · Informational 15/100

This commit is a user-experience polish change for the Trezor hardware wallet's touchscreen interface. It changes when the device vibrates (haptic feedback) in scrollable menus so that the vibration happens when the user lifts their finger and confirms a tap, rather than when they first touch the screen. This prevents confusing vibrations while the user is merely scrolling through a long menu. There is no security-relevant change here.

Security candidatechore(core/delizia): remove unused importsby Roman Zeyde · 11c17f35 · Mar 17, 2026 · 2 filesMessage 57 · ThinInformational 15Details
Commit message · Roman Zeyde

chore(core/delizia): remove unused imports

[no changelog]

57/100 · ThinMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope! No meaningful explanatory body
Why it was queued
boot or update path
AI analysis · Informational 15/100

This is a routine code cleanup commit that removes or conditionally compiles unused Rust imports in two user-interface files. It does not change program behavior, fix a bug, or alter any security-relevant logic.

Lower-priorityci(core): collect FW binaries' sizesby Roman Zeyde · 2a24b16d · Mar 17, 2026 · 1 fileMessage 57 · ThinInformational 15Details
Commit message · Roman Zeyde

ci(core): collect FW binaries' sizes

[no changelog]

57/100 · ThinMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope! No meaningful explanatory body
Why it was queued
documentation-only discount
AI analysis · Informational 15/100

This commit adds a new automated CI job that reports the sizes of built firmware binary files. It does not change any firmware code, crypto logic, or device behavior. There is no security-relevant change.