Mark Haslinghuis

- Does it help using `defaults` commands before trying to flash ? (Always remember to save a backup before you use this command) - This is not something Betaflight can...

@Machatron can you try https://app.betaflight.com/

Won't be a software solution. Using I2C port 1 for internal and port 2 for external devices would already make this possible. Board would need to expose pads for second...

Tested BETAFPVF4SX1280 which uses SA over softserial - it does not work with this PR. (Softserial is showing up). Do not have access to SA capable hardware for testing UART.

**BETAFPVF4SX1280**: SmartAudio 2.0 over softserial not working. **AIRBOTG4AIO**: LPUART is present, but there is a nonexisting SOFTSERIAL port available ? (feature SOFTSERIAL is disabled)

@ledvinap BETAFPVF4SX1280 works in master. With AIRBOTG4AIO it shows SOFTSERIAL port in ports tab (while there are no resources). AIRBOTG4AIO master: fa9edde3-e68d-4811-908d-b37501c9cc0b AIRBOTG4AIO PR: b2868f00-6f1a-42f7-a1c5-fbfb238f0d8c BETAFPVF4SX1280 master: 684b5b5e-bb16-4c03-aa85-7f066fb45f87 BETAFPVF4SX1280 PR:...

@ledvinap No - flashing with full chip erase by default

 AIRBOTG4AIO ports looks okay now !!! Working on another bug I applied to much voltage on the BETAFVPF4SX1280 so R.I.P. Cannot test SA over SS.

Another case found (think this should be address in a folllow up PR): 106fb501-869d-4668-ba2e-497dd9885fa5 (>= 4.5.0 not working) e05f773c-509b-4098-99d3-4d60ed22a04e (4.4.3 working) HAMO/CRAZYBEEF4DX(STM32F411) (OpenVTX) works with 4.4.3 - not with 4.5.x...

Tested on SPBE F7V3 with TBS Unify Pro 5g8 v3 (SA 2.0) and GEP M1025-MI. @ledvinap please rebase. Think this is ready to merge or is there anything left to...