Trent Piepho

Yes!

Another option is to disable bluetooth (dtoverlay=disable-bt), then the primary uart on /dev/serial0 changes from the mini-UART (ttyS0) to the PL011 UART (ttyAMA0) previously used for BT-HCI, which does work for stm32flash. So it's possible to get stm32flash working on the same pins without using another UART, if you can give up BT.

Support for Wireless Firmware updates on STM32WBxx

Have wireless update also flash the firmware

Make some error messages possible to disable

Add commands for FUS (wireless firmware) interaction

Add flag for chips with special wireless firmware update

Firmware Update Service (FUS) functions