Robin Hoods Playground

well i am trying to do my psp but when i start the program it keeps saying unable to start game. (80020148)
i am using verion 4.05


need help

tryied using all the tuts.. no help

have you tried updating from network settings? if you have a CFW you should be able to update to 5.00 M33-6 then you can upgrade to 5.50 GEN-D2.