Thanks. yes that’s exactly what I followed, but having done so the FC powers up with no LED’s and when you plug it into the PC its not detected.
That page says - MCU - STM32F405 32-bit processor running at 168 MHz
TBS lists MCU AT32F435RMT7, 288MHz.
I think that’s the problem and its due to ChibiOS not supporting AT32 based chips.
Steve.