I luv my p2's. I know they are ancient. Still have questions. Can't find appropriate threads. I have a p2 version 1 that I upgraded to 3.14. Software says it updated successfully. Now it won't start motors. RC binds; light is green. Have yellow lights blinking slowly as if ready to start motors. Doesn't happen. What did I do to the IMU? I have multiple RCs to test. All bind. but nothing will start bird? Where do I go from here?