4.5.5

yukangcao/DreamAvatar4.5.5Jun 28, 2026by blckmn

AI Summary

This release focuses on bug fixes for MSP (Multiwii Serial Protocol) handling, specifically addressing pending request cancellation and restoring per-byte activity tracking.

Key Highlights

Fix MSP pending request cancellation on '$' only
Restore per-byte lastActivityMs tracking

Full Release Notes

<!-- Release notes generated using configuration in .github/release.yml at 4adbd3ef7cb546947600e5f747bd5453c9573063 -->

## What's Changed
### Fixes
* [4.5] fix(msp): cancel pendingRequest on '$' only, restoring per-byte lastActivityMs by @nerdCopter in https://github.com/betaflight/betaflight/pull/15330


**Full Changelog**: https://github.com/betaflight/betaflight/compare/4.5.4...4.5.5