Tracker-4.5.1 has been released as the official version and can be downloaded using MP, QGC or directly downloaded from firmware.ardupilot.org.
This release includes just one small but critical bug fix to the CSRF driver. That change is listed in the ReleaseNotes and copied below.
- Critical bug in the CRSF R/C protocol parser that can lead to a handfault and a vehicle crashing. A similar fix was applied to the GHST protocol, although we believe that GHST could not be affected by the bug, so this was just a precaution.
If you are using 4.5.0 and use the CRSF RC we strongly recommend upgrading immediately to 4.5.1.
Thanks and enjoy!