Originally Posted by playerkp420
You should use a spare hdd. So when you want to restore, just flash your dump and put original hdd back.
Edit your dump with a hex editor, flash the edited dump, then do FSM install of the low firmware you want.
But I think it will brick before getting to the FSM install. I haven't tried, but just my guess.
I will definitely use a spare hdd as I have 3, one for games I want linked to my psn account, one for homebrew and one for situations like this.
Rather than hex editing a dump I was thinking of installing a 3.55 firmware with the checks patched out and dumping that. This should provide the same effect, correct?