1. download multibuilder
2. go into multibuilder/data/my360/ make a text document named cpukey
3. plug an ethernet cable into your jtag and boot into xell and wait for the ip adress to com up.
4. type that ip adress into a web browser.
5. download the raw flash and copy the cpu key.
6. rename the raw flash nanddump
7. put the cpukey into the cpukey.txt you made earlier
8. put nanddump into the my360 folder on multibuilder.
9. run multibuilder.
10. select your motherboard.
11. select glitch hack image,
12. select build image without dashlaunch.
13. image is complete, will be in the data folder named updflash.
14. put updflash on the root of a usb stick.
15. boot into xell on you jtag with the usb stick plugged in and wait for the image to be done writing.
16. Your call of duty should work now!

dvdmeece helped me with this, but In case other people need help, I decided to post this.