Okay i upgraded my Custom Firmware today on my PSP 1000 It was on 401 M33-2 Before I updated to the new 5.00 M33 Update. I did the Update via Wifi on the PSP, At first it downloaded a 1mb File then it took it to a black screen ( I think might be the recovery menu ) and it said no 500.PBP File found Would you like to download a new update via the internet. Pressed X (Yes) Downloaded the update and installed. So that's all done but i then clicked on the XMB the new Playstation Store and when I try to access *Sign Up for Playstation Network * It says * A System Software Update for the PSP system is Required* What?! How come it's displaying this message when it's already up to date? Anyone can please help thanks!