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betaflight release notes Betaflight 3.5.6

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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: AIORACERF3, FRSKYF3, IMPULSERCF3, RACEBASE, RG_SSD_F3, RMDO, SPRACINGF3, SPRACINGF3MINI, SPRACINGF3NEO, STM32F3DISCOVERY, and ZCOREF3 (#6815, #6887, #6994, #7239, #7241, #7362, #7527).


  • Fixed build errors when building without support for blackbox (#7399);
  • Added validation for the existence of the selected blackbox device (#7400);
  • Fixed build errors when building without support for the 4 way ESC boot loader (#7409);
  • Made OSD available when building without support for CMS (#7410, #7576);
  • Fixed bug in serial driver on F4 (#7431);
  • Fixed the color range for the LED_STRIP when displaying battery voltage or RSSI (#7460);
  • Fixed bug in onboard flash initialisation (#7470);
  • Fixed bug in pinio initialisation causing the first switching event to be ignored (#7492);
  • Added error message when attempting to set invalid PID / rate profile in CLI (#7519);
  • Added support for connecting to SmartAudio 2.1 devices (#7461);
  • Fixed bug in USB driver on F7 (#7563).

Target Updates:

  • Added new target JHEF7DUAL (#7398);
  • Added new target HAKRCF411 (#7425);
  • Fixed flash overflow on AIORACERF3 (#7527);
  • Added support for the Airbot Omnibus NanoV7 to the OMNIBUSF4V6 target (#7545).

Lire la source

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