i have a fat PSP and it is at like firmware 3.90 and i need some help i want to put a homebrew on it but i don't know what i need to do as far as degrading it, i really don't want to Pandora it unless it is the only option (because i already destroyed one trying to). so someone tell me if there is another way or I am going to have to get a Pandora battery made or buy one from someone else.