Hello, I recently came into possession of a old PSP. It turns on and holds a charge, does not have a Memory stick (adapter in the mail) and is most importantly loaded with 5.00 M33-6. I am not interested in hacking and dont want to have to learn how to use this firmware just to tinker with an old toy, I I was wondering if their is a way to restore this device to the latest stock firmware? I just want to mess around with it for nostalgia sake. Hope you guys can help me out looking forward to hearing your responses.