This is our fifth release candidate (RC5) for Betaflight 4.3.

** WARNING - DO NOT USE GPS RETURN WITH THIS BUILD **

Remember some things may need fixing and fine tuning, and there may still be bugs. Please use it with caution and report back any issues at https://github.com/betaflight/betaflight/issues. Thank you!

Note: Failsafe code has been updated extensively. ** IMPORTANT Do NOT rely on GPS RESCUE until you have verified that it works as expected on your build!**

IMPORTANT: Make sure you install and use the latest version of the Betaflight Configurator (10.8-RC5 or higher) from https://github.com/betaflight/betaflight-configurator/releases/tag/10.8.0-RC5 before updating your firmware.

To get the best out of the flight performance improvements, please read the Tuning Notes.

If you want to talk about Betaflight, ask configuration questions, or just hang out with fellow pilots, you can do this in our Facebook group.

Betaflight also has a presence on the Discord messaging platform. Come and join us. Most developers hang out there, so this is a great place to talk about the things you are tinkering with in Betaflight, or get help with really complicated configuration problems.

Betaflight 4.3 Release Candidate 5 brings the following updates:

Safety Improvements

• Added a minimum value of 200ms for failsafe guard time and failsafe recovery time - failsafe_delay in the CLI,
• Many improvements to failsafe code
• RXLOSS should now only appear in the OSD after a full 100ms of no Rx signal
• Default Stage 1 Failsafe period is now 1.5 seconds, close to the Stage 1 period of 1.6s when set to 1.0s in 4.2

Fixes

• Fix for DSHOT/Bitbang not holding the line at idle level for the full bit-period
• Cleaned up [ELRS/NVIC code] (https://github.com/betaflight/betaflight/pull/11461)
• Fixed a bug where saving a profile could falsely trigge a Rx loss warning (for non pwm/ppm protocols)

Configurator

• Fix for the spinning model icon in the Receiver tab
• Failsafe durations can now be entered in seconds
• Updated translations
• Fixes for backup and restore buttons
• Other small bug fixes

CI

• Added a release workflow (https://github.com/betaflight/betaflight/pull/11515)

Betaflight 4.3 Known Issues

#11527 ELRS cannot regain control after failsafe (GPS rescue) because stick input is not registering therefore stick threshold cannot be reached #11520 Firmware 4.3 SmartAudio Intermittent Connection - Mamba F722 MK2 #11518 iFlight Beast H7 V2 no SPI-Flash (BMI270 version) #11517 FrSky SPI D8 - significant range reduction starting from PR #11380 #11506 Kakute H7 Mini 4.3-RC4 locks up when performing certain actions #11502 UART1 shows twice in Ports tab, BF Configurator 10.7.2, Diatone Mamba MK4 H743 #11496 clracingf4 goes into DFU mode when setting set_displayport_msp_serial #11488 Kakute H7 Mini SPI Flash not working #11484 ESC passthrough configuration behaviour change (non-BL Heli) #11473 BF4.3 RC3 communication with the equipment is constantly lost Flysky IBUS #11455 Lumenier H7 ultimate Receiver Glitching Out #11453 GPS working on H745 in BF4.2 but not in BF4.3 RC3 #11448 BF4.3.0-RC3 Betaflight-tx-lua-scripts are not saved with SPI rx(ExpressLRS) #11440 HolyBro Kakute H7 Mini ESC Firmware Issue (Blackbox) #11438 ACC Trim via OSD has been broken somewhere during the implementation of the BF 4.3 #11424 Dshot commands causing motors to spin (when BDIR=OFF) #11367 READY_BEEP #11347 OSD stats display shifted vertical moving the title off the top of the display #11334 'Reboot to bootloader' boots to wrong bootloader. #11260 CAMERA CONTROL on BF 4.3, difficult to enter the menu, or select the right line in the OSD. #11233 VTX management via OSD don't work - BETAFPVF4SX1280 - 4.3.0 RC-3 #11416 Configurator hangs after flashing / save & reboot #11157 Failure to boot caused by re-use of SPI pins. #11137 Dshot not working on latest master build on G4 #10946 STM32G47X FLASH write not working with blackbox_mode=NORMAL #10936 Stats is not being saved when Rate profile adjustments are set (latest Master)

Big thanks to:

@SteveCEvans @hydra @haslinghuis @ctzsnooze @bakwc @daleckystepan @klutvott123 @blckmn @mluessi @phobos- @ledvinap @KarateBrot and many more who have tested.