Hi Everyone,
if anybody wants to update firware on Your Patriot Valkyrie NAS by 3 vesion, plese do not do it, if you want use it after. All existing folders is hidden after update and new folders and files can have length only 8 characters. The only good thing is, that data will not disappear from disks physicaly. When you connect one of hdd to PC via SATA, you can see all your before data, but you cannot continue to use NAS with these HDDs. I used RAID1 and after I updated fw, I needed to put my HDDs into table and buy two new, then I downgraded fw-ver2 and restored original settings, then everything works ok.
Hope it helps somebody.