Got it guys!
I was trying to repeat that issue and I found out, that when I push the "up performance" button together with "sound button 1" which is right under it on remote, it wil start rebooting proces and scrolling up to 125th performance. Hope this will solve also your problem. Question is, if it is possiblbe to stop it somehow (I don´t know, maybe with sthg in system menu), because it can happen anywhere and anytime. But I am happy, that I know the reason
I have to say sorry to Kemper amps