i have a usb mod chip that is to work with a version 4 ps2. Im not sure if i have a playstation 2 but im pretty sure i do. At this point a can burn a dvd movie and it works on my ps2 and other ps2 without a mod. But the thing is got this to burn games. But for some reason my game shark will not read now that i have my mod chip in. It also seems as if other non dvd disc such as cds dont work. There is a disc error when i put the game shark. I need help.