OK, im little confused about the situation. So if I understand, now your flash disk is working again and you can copy files back and it stays there? That's a good sign! About your link to unlock menu - yes, that is exactly the same menu as I prepared it for your device acording to the instruction which I gave you. The only difference is that I prepared it for Flash Disk and not for SD, because your device has troubles reading form SD in the first place.