I have a psp-1000 that is modded with emulators and ISO's, but ive been trying to add Tony Hawk Underground 2 iso but it keeps saying corrupted data. My other ISO's and emulators run fine but everytime i try to add more it does this. I have downloaded numerous different iso's of the same game and it wont work. ive also tried another game called the warriors and still does the same thing. But the two GTA games that are iso's run fine. PLease help id appreicate it.