Hey guys i need some help. my psp slim(2001) has 4.01 M33-2 and i want to upgrade to 5.00. Can i just get the 5.00 file and upgrade my psp or do i have to rehack the psp all over again? I haven't used my psp in a long time and kinda forgot what i am supposed to do? help is very much appreciated :biggrin: