I have not had my Phantom 3 4K for long so have logged only about 10 flights. I did the firmware update when I first got it and everything has been working perfectly. On Saturday I attempted to fly the drone from my boat which was underway at the time I was warming up the bird. I kept getting an IMU error message so had to wait until we got to dry land where I could sit the drone on a flat service while it did the update. Just trying to figure out if it was the movement of the boat during warm-up that was causing the error. Any thoughts?