SpeedyBee F405 Wing soft serial fix

The SpeedyBee F405 Wing is an inexpensive but fully featured flight control board for INAV or Ardupilot.

The first release INAV 6 firmware for this board did not have soft serial support enabled, so it was not possible to use Smart Port telemetry from FrSKY receivers.

Smart Port connection from an FrSKY receiver allows all telemetry to be sent back to the radio.

Here are the updated firmware hex files to enable soft serial on the T2  pin of UART2:

SpeedyBee F405 Wing INAV 6.1.0 fix soft serial firmware 

UPDATE JUNE 2023

S8 bug fix - With the factory loaded firmware S8 pins did nothing, S9 acted as S8, S10 acted as S9 etc.

This has been remedied with the release of SB F405 Wing INAV 6.1 firmware. 

INAV UPDATE 

Latest firmware INAV 6.1.1 also fixes the "Dolphining" problem which was introduced by INAV 6.1 to all FCBs