Can I let px4 run in the board based on stm32f427ZI?

Dear px4 funs
I am developing a autonomous mobile robot with mecanum wheels. I want run px4 in robot control board. And the control board is based on stm32f427ZI,that is to say my board has 144 pins MCU more than the MCU of pixhawk. I know I must change the code of bootloader of PX4. So it is easy to change the code of bootloader of px4 to adapt to my board?

Thank you very much

It depends how close your board is to one of the supported boards. Take a look in src/drivers/boards and nuttx-configs to see how it’s done for px4fmu-v2 (pixhawk) for example.