Hi, I’m also having a problem with my H90 locking up. It just did it and made a high pitched tone when it did it.  It was working for a good period of time and has picked up in the frequency of the crashes.  I had previously had problems with the app and saw the threads in regards to that. I did the recovery and put on the last firmware twice.  Should I be factory resetting it?  I really do like it and hope that it is ok.

thanks