I did the firmware update and it all went fine. Threw in my second battery and that went very quick. A few minutes at most. I decided I would do the IMU calibration later and flew anyway. There was nothing that I would call unacceptable. Rock solid. As for speeds, if there were any showdown maybe it only happened at the beginning of the flight. I still got the same speeds mid and towards the end of the flight. Or so it seemed.