In addition to firmware upgrade issues my M600 Pro has started giving my IMU errors and even after recalibration the aircraft will not lift. Right now I'm looking at a $5K boat anchor. The aircraft is essentially brand new, maybe 8-10 flights since I got it in November. Any help or suggestions of how to trouble shoot and correct my problem will be very appreciated! I'd also like to hear other users experience with M600 Pro, good and bad.