I have the exact same problem on a v1.0 xbox. At first when i got it, it was FRAGing, so i tried to install a switch on a18/a19/vcc/grnd to be able to boot each part of the TSOP separetly to see if it was a bios problem. After this little tweak, the xbox was now FRAO no matter what part of the TSOP i boot from. So i removed the switch, and i was really surprised, cause now it FRAO instead of FRAG. I'm shure there was no solder splash or broken trace during the installation/desinstallation of the switch. So does anyone have been ever succeful fixing a FRAO xbox, and if so, for god sake, tell us how you did it. I've been searching for so long now to fix my v1.0 xbox, and all i could find was info about broken trace or solder splash, but i'm almost 99,9999% shure that it's not my problem, probably like most of you that are having the same problem.