Got my Inspire 2 back from DJI repair. Test flew it and all was well. Next flight ended up with IMU error. Now DJI stated the drone crashed due to an IMU failure. I have never had to calibrate the IMU in the past. What I am now wondering is could there be another issue causing an IMU error, or is it that the new IMU just needed to be recalibrated. After doing the calibration I flew three missions with Drone Deploy, four with Litchi, and two with DJI, all flew perfectly. I am still a little concerned about a potential continued IMU issue. The crash cost 1200 bucks to have repaired.