anyone know anything about memory sticks. i have a 4gb and a 1gb my one gb runs everythin i put on it. like ps1 games from the playstation store and ps1 games from my comp and psp iso's. however my 4gb only runs one psp iso and no ps1 games. when i try to move ps1 games from the playstation store to it the store says it is locked and unable to transfer any ideas.