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2025.12.4

Robbyant/lingbot-map2025.12.4Jun 2, 2026by blckmn

AI Summary

Maintenance release for Betaflight firmware addressing race conditions in CLI operations and fixing UART configuration issues.

Key Highlights

  • Backport CLI MSP race-condition fix
  • Fix config unconditionally clamp failsafe_procedure
  • Fix UART guard for half-duplex pinless modes

New Features

  • CLI MSP race-condition fix
  • Config failsafe_procedure clamping
  • UART half-duplex pinless mode guard

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