I need files from 601 which in hidden disk Appdata, System,System00, Resourse. Can someone help?

Hello every one, can somebody help me. I have "white"  screen when i turn on my player, it has happended, after i've updated my firmware,here my foolishness (( my friend advised me to change firmware of hifiman 801 and to upgrade with 801 0.21 my 601. Of course, nothing to worked.I've tried to...