i cant post it until 15 posts ...FML but google this "Running Gran Turismo Portable on PSP 5.00 M33-6 custom firmware without using a ripkit" and you should see it[/color]
so i said ahh what the heck ill give it a try ...
i was running 3.71m33 cfw nd i upgraded straight to 5.00 m33-6 to do EXACTLY what the author did for it work with no problems ...
it shows up in the psp menu under games and i see the icon and everything the game starts the psp logo shows and then my screen goes black and it says “the game could not be started. (80020148)”

wtf is going on??????
HELPPPPP ive been trying allllllll day to get this running..