I've got some bad news unfortunately...
I've run into a couple 'brick walls' as far as implementing iXtreme LT into my software (specifically spoofing of firmware)...
Due to these 'brick walls' it would seem that my development of '360 Modification USB Drive' and '360 Modification Disc' has come to a halt.
The future of my usb drive/disc based solutions are unclear, so for now I recommend using either JungleFlasher or iPrep, both are awesome solutions.
I apologize for any inconvenience this may cause.