my psp is running official firmware 2.80 and i do exactly as the guide says, but when i try and start the update it says that the game cannot be started. how can i get it to work? is it because my psp has official firmware 2.80?
You need to downgrade to 1.5 first with this 2.80downgrade guide:
then you may proceed to install 3.52M33
afterwards update the 3.52M33-4 patch, then you may proceed to the 4.01M33 installation