Hello, I havent used my psp in some time and Im trying to get it updated. I have a memory stick that installs 3.71m33-2, as well as a pandora battery. The problem is I can't seem to update past that. I have tried updating to 4.00, 5.00 and 5.55 both m33 and ofw. I also tried ofw 6.20. They all have the same result- installation says its succesful, but then the psp will not restart after the update has completed. I have tried formatting flash 1, aswell as the memory card. Any suggestions on how I can get to a more current cfw? Thanks for any help!!