I've tried to burn Call of Duty 4 and a bunch of other games like 10 times and my 360 keeps telling me it's an unreadable disk. My guess is this happens because I get the Stealth check failed PFI error before I burn it. I've tried XBC, Cd clone and some others but I keep making coaters. I tried to read the tutorials but they are full of dead links. I used to burn 360 disks with no problems! The only difference is my friend put a new firmware in. A lot of my old disks don't run now either. I guess I was never "stealthing". Any help would be really appreciated. thanks in advance.