I have a 40gb ps3 fat that is on 3.5fw i am going to downgrade and jailbreak the ps3 but i dont have a dongle or board yet. i want to back up my dev_flash3 and other files but am not sure how i do it. can i only back up those files with a file manager and a jailbroken ps3. or can i back them up with a retail un-jailbroken ps3 on 3.5fw using backup utility on xmb. i want to backup flash files because when i downgrade i want a backup in case i lose bluray playability. thanks for any help and info.