Originally Posted by katsuru
I dunno im gona tell him to do whatever he needs so he gets his console up and running again.
3M patch can also be used on 4.31 if the CFW bases are 4.31. you cant only go from 4.31 to 4.30. But since there is one cfw base 4.31 its now possible
If it is a downgradable console, then just downgrade. Patch the valid dump and flash.
Then when you get to the part when you enter FSM, skip the dongle. And go straight to the Lv2diag.self and PS3UPDAT.PUP on USB.
It will install the firmware, then exit FSM with the other Lv2diag.self.
You can not use Three musketeers patch. You can not install firmware from recovery, while in FSM.