I just did an advanced imu calibration and it took a long time. Finally it was done checked and said it was fine. Powered cycled it and now it says imu abnormal and I need a advanced imu calibration again. So I did it again and I'm still waiting for it to finish. It's been a 45 min now. All the values look fine. But it's stuck on. 4 bars in the progress screen. I can see the values moving a little. I've done these numerous time with different phantoms and. 450s and never waited this long.