Hey All First post but lurking for quite a while. Just got my P3A a few days ago. Upgraded firmware all was good. Took it for a quick up and down and that was it. All was well. This morning I upgraded to the latest and greatest firmware and started getting an IMU error afterwards. Rebooted, all gone. Tried a few more times and gone. Took it out for an actual maiden flight. Flew through one battery without issue, although my iPad overheated so I brought it back in manually. Went to put in another battery. IMU error. Came home, no IMU error. Let it sit on while I went thought some video and pics and discharge, swapped batteries, IMU error. Ok I can take a hint... I need to calibrate the IMU... but can someone explain why, a little more in depth? Let me add that it is very hot today... about 100 degrees. I have read various conflicting things about IMU calibration. Is this just a heat thing or is there something else in play here?