Heres a Guide for OFW !!! YES for Original Firmware 3.6+
U need 2 Consoles for this one 3.55 and one Original 3.66 and both Consoles must have the same PSN account (and you will need the inFAMOUS 2 Original Disc and a Backup)
at first you put the save file U want on 3.55 Jailbreak Console Load up the Game an when it says its Corrupted Overrite the Save and leave the Game.
than go to your Savefiles in XMB and Copy inFAMOUS 2 save to an USB Drive.
After this put this USB Drive in your 3.66 Original Console and copy the save on it.
Load up the Game and Enjoy