Here is a very quick and easy tutorial on how to Flash Your JTAG to 9199!

First you want to download FreeBootToolMaker:
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Steps to Flashing your JTAG:

1. Select which motherboard revision you have.


2. Enter your CPU Key


3. Click generate freeBOOT!


4. Choose your original NAND dump, then click open.


5. Then after it's done generating the image, rename the freeBOOT.bin file to updflash.bin


6. After that put the updflash.bin in your flash drive.


7. Open Flash360, Press A.


8. Choose the option that will not let you keep the current KV and CPU Key.


9. Once done Press the BACK button twice so flash360 itself will turn off your Xbox.


10. Unplug everything, leave off for 2 Minutes, then power on, and You should have freeBOOT v.032!

I hope this tutorial helps everyone that needs it! I tried to make it as simple as possible!