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betaflight release notes Betaflight 3.5.2

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Maintenance Release

Please read the Betaflight 3.5 Release Notes.

This release contains bugfixes and target changes only. For a full list of new features see 3.5.0.

We have tried to make this release as bug free as possible. If you still find a bug, please report it back to us by opening an issue here.

We also have a Facebook Group: If you want to talk about Betaflight, ask configuration questions, or just hang out with fellow pilots, you can do this here.

Important information when upgrading from an earlier version of 3.5

  • a number of users reported issues with the firmware hanging during a diff or dump. The root cause of this was identified as a bug in the MSP protocol causing corrupted configurations. This was fixed in 3.5.1. If you are using 3.5.0, it is recommended that you upgrade to at least 3.5.1, to eliminate the risk of experiencing lockups during diff or dump caused by this bug (#6696);
  • unfortunately, bugfixes in the flight controller core functionality have led to an increase of the firmware size, causing it to overflow the available space on a number of F3 based flight controllers. As a result, some features have had to be removed from a number of F3 based flight controllers in order to make the firmware fit into flash. The following targets are affected: RACEBASE, SPRACINGF3MINI, SPRACINGF3NEO (#6815, #6887).

Safety Improvements

  • Added HEADFREE indicator to the OSD flight mode and warnings display elements (#6877).


  • Fixed bug in anti windup protection (#6721);
  • Fixed bug in iterm relax (#6726);
  • Fixed Spektrum SRXL bug (#6743, #6899);
  • Fixed zero throttle deadband when using switched 3D modes (#6798);
  • Fixed bug causing an inactive telemetry port to be registered as a displayport (#6764);
  • Fixed bug in RSSI settings logging (#6806);
  • Fixed RunCam device support (#6810);
  • Fixed bugs in dual gyro support (#6844);
  • Fixed bug in XN297 driver (#6863);
  • Fixed bug in gyro overflow / yaw-spin logic (#6864);
  • Fixed bug causing lockups when an inserted SD card is not ready (#6882);
  • Cleanup of receiver protocols (#6905);
  • Fixed build warning in SmartPort code (#6907);
  • Fixed bug in CLI causing lockups (#6913);
  • Cleanup of telemetry protocols (#6918);
  • Fixed bug affecting stick arming (#6934).

Target Updates:

  • Fixed MAG orientation on YUPIF7 (#6720);
  • Added camera control pin on DALRCF722DUAL (#6765);
  • Moved default for battery meter source to board config on STM32F7X2 (#6774);
  • Added new target SPEDIXF4 (#6779);
  • Added new target UAVPNG030MINI (#6781);
  • Added new target CRAZYBEEF3DX, updated CRAZYBEEF3FR, CRAZYBEEF3FS (#6790);
  • Fixed broken settings on AG3X, UAVPNG030MINI (#6794);
  • Added camera control pin on SPRACINGF7DUAL (#6800);
  • Fixed broken RSSI input pin on multiple targets (#6813);
  • Fixed broken ESC serial driver on WORMFC (#6819);
  • Fixed broken ESC serial driver on STM32F4DISCOVERY (#6820);
  • Fixed broken ESC serial driver on NOX (#6821);
  • Fixed broken ESC serial driver on MIDELICF3 (#6824);
  • Fixed missing default voltage meter source on KISSFCV2F7, MOTOLABF4 (#6827);
  • Fixed list of available pins on OMNIBUSF4FW (#6890);
  • Fixed broken I2C pins on FLYWOOF405 (#6912);
  • Re-added removed features on multiple targets (#6930).

Lire la source

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