Ardupilot without STM32F1

Hi, I am making a pixhawk based board. I have a stm32f4 but no stm32f1. I don’t know what files to flash and what to do with the px4io_bl.bin as there is no stm32f1 chip. I just want it to run Ardupilot. Hope you all can help me. Thanks

Perhaps re-Post to as this forum deals with the px4 stack (they’re different).

Hi! Thanks for the tip.