had a malfunction and now the controller won't communicate with the P2V. I have tried everything. Updating firmware on controller and phantom, IMU Basic and advanced Calibration. when I connect to the phantom thru Assistant I get a CFG-ERR message it says Configuration error, this may cause by firmware upgrade from old version.or abnormal Tx calibration. Re-calibrate your transmitter,and power cycle your controller and check all of the parameters. I can't clear it. any and all suggestions are appreciated