okay i have a psp 3000 and my son has a psp 1001. i run 6.35prob4 which runs fine. i want to update his to 6.20prob4 so he can play newer games. now i tried doing the softmod for the pandora battery but i cant do it on mine. and i don't want to try it on his and just mess it all up. so my question is how would i go about doing that with one psp 1001?