Hello, just bought my first P3P. Hope someone can help answer my questions. 1) Must firmware update be performed before doing the IMU calibration? I wasn't aware so I did both IMU and gimbal calibration first wihtout having my firmware updated. Will there be any problems for this error? 2) I mistakenly performed IMU calibration twice even though the 1st calibration had been successful. Will it matter? 3) Is IMU calibration an one-time off task? If not, how frequent do I need to do calibration?