I have a P3p that I had to change the main board out with another p3pro. Now that is done I need to get it up and flying. I have vision through the camera but I can not update the firmware or calibrate the IMU or compass. I have tried to swap out parts from another p3p I have to see if I could locate the problem. I have swapped out the gimbal and camera.....no luck.....I have swapped out the wifi board......no luck.....I have swapped out the GPS......no luck the only thing left is the main board and motors. Any one have any idea on why I can not update the firmware or get any control over anything?