i have looked and havent seen and help in the search, so i have a psp running at 2.71 and i am looking to upgrade it to official firmware at 3.03 because i cant do the 2.71 downgrader. when i put the folder update in game and then the 3.03 update in update folder, the data says corrupted. i need some help? i have a und in and the code is I013000 or something like that, help please??????!!!!!