Unfortunately I have opened my player already. Unfortunately cause I cannot see the board - it is hidden behind the lcd screen and some kind of caoting. Two small chips are behind lcd and I cannot get to them. RECOVERY GUIDE is not much of a help - my player is not dead 100% as it is recognized as USB device, but not AFDU device - driver is not suitable
As for a bad button - "download" does not looks like "erase" button. All I've tried - to download current fw for backup...