My friend installed my Magic3.1 in my v4 PS2 and all the originals work. The PS1 and PS2 CD backups don't work but the DVD backup does. Now these backup's where made when I had the USBMod in the PS2 and they worked so could it be the way they PS1/PS2 backups were made or something with the install. Any help would be greatly appreciated. Thanks in advance.