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4.5.5

Portkey-AI/gateway4.5.5Jun 28, 2026by blckmn

AI Summary

A bug fix release for Betaflight that addresses MSP (Multi-Sport Protocol) functionality issues.

Key Highlights

  • Fixes pending request cancellation on '$' character
  • Restores per-byte lastActivityMs functionality

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