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[livion462]

Why would you want to do that?
The matrix chip already has a nice option to go back and forth between the original bios and the modified one.

Plus if you flashed your matrix bios using the blue or red mods, then you know before the game loads which bios you are using.

Also, when you are using the modifed bios, you can see the green LED from the Matrix chip through the side vents of the xbox (as opposed to a red LED when the xbox is using the original bios).