Yamaha THR30IIW Black

It happend to me atleast 3 times when I configure my presets and play some time with the amp and sudenly it won't turn on, just lid the power button red for a sec or two and it turned off itself. No power issue, just firmware/software issue, amp has to be reseted so I lost presets but it worked again. Till the last time, when I played as usual - no presets, I gived that up - and after session I normally turned it of. The next day it cannot be turned on - no red color lid on power button what so ever. It only lights up for a minute or so with green color when I connect it to adapter, but since it is fully charged, button lights just for a while. It cannot be turned on, reset did not helped.

Sound is good, overall it is good. But firmware is a mess I think and I have trust issues with this unit.