Everything was working fine, then I took the update to 01.04.0602.  After a weekend of flying, and reviewing my video, I noticed the gimball jitters, shakes.  I tried to calibrate the gimball, but it gets stuck at 50%, then the controller with the integral screen freezes too.  Have to shut down the A/C and controller.  Tried 5 or 6 times with no success.  I now notice the gimball makes a bit of noise, and gets very hot.  I tried to refresh the software, did not fix anything.  

So I downgraded the A/C softeware to 01.03.0509, and again the gimball is rock solid, no noise either.  Did someone forget to verify this software?

look at my post about the latest firmware. I hope that will answer your question.