I get 'not enough space for music db please free 200mb' error now and my pc doesnt recognize the player after switching to MSC
Another edit, looks like its fixed, I installed 01.01.21 stock firmware update, formatted the player, deleted bootloader and rockbox via installer and then installed it using 01.01.21 bin file, so far looks like it works, thanks for help, it was sitting in my desk for like 2 years... Will let you know if I've got any more stupid questions ;p