4.5.5

electroplix/Design-System4.5.5Jun 28, 2026by blckmn

AI Summary

A maintenance release focusing on fixes for Multi-Serial Port (MSP) handling and pending request management to improve stability.

Key Highlights

Fixed MSP pending request cancellation logic to restore per-byte lastActivityMs tracking.
Addressed specific behavior regarding pending requests on '$' character.

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