No way possible. I mean if you got 2.00 the only exploit known for it has nothing to do with a saved game. If you got 2.00+ then your safe there too because in order for it to break your PSP would mean it had the ability to access your flash(psp system files) and its just not possible. The most you could "brick" with Edisons Cheat Device is one of your saved games in GTA:LC if you saved it with some cheats running. If you could brick your psp using the method in his hack works in then we'd already have a working exploit and a real 2.5 downgrader would of already been released