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2025.12.4

coleam00/Archon2025.12.4Jun 2, 2026by blckmn

AI Summary

A firmware maintenance release backporting critical fixes for CLI operations and UART configuration.

Key Highlights

  • Backport CLI MSP race-condition fix
  • Fix failsafe procedure clamping to valid range
  • Guard half-duplex pinless UART modes

Full Release Notes

<!-- Release notes generated using configuration in .github/release.yml at 2025.12-maintenance -->

## What's Changed
### Fixes
* [2025.12] Backport CLI MSP race-condition fix (#15193) by @blckmn in https://github.com/betaflight/betaflight/pull/15201
* [backport] fix(config): unconditionally clamp failsafe_procedure to valid range by @nerdCopter in https://github.com/betaflight/betaflight/pull/15191
* [backport] fix(uart): guard half-duplex pinless UART modes (#15218) by @haslinghuis in https://github.com/betaflight/betaflight/pull/15258


**Full Changelog**: https://github.com/betaflight/betaflight/compare/2025.12.2...2025.12.4