Here's a little guide I've made while making a updated 12611 image for my JTAG. As you can see, its fairly simple to follow. The pictures do most of the explaining. If you haven't already Download Easy FreeBOOT 12611 GUI from Digiex Download Center Warning: A friend has informed me that Easy FreeBoot may have problems with 256/512 jaspers and Windows XP 1.) You're gonna need to open Easy FreeBOOT. (Double Click on EFB.exe) 2.) Once opened hit Create Image. 3.) Select you're nand.bin file. It should be your original nand that you use, not an old hacked freeboot one. If you dont have the original nand then I think you can dump a hacked and use the "use donor files" option that is there (You can acquire this using FSD or flash360) 4.) Enter you're CPU Key. (You can get this by booting into XeLLous and telling this program to get the key) 5.) Verify that the nand.bin image you selected is what it says it is. As you can see mine is correct! So I hit yes! 6.) After hitting yes, you should see this screen. Now press any key to begin the process. 7.) If everything went okay then you should see this saying that fbBuild finished. Press any key to quit. 8.) Now save you're Updflash.bin. 9.) All done! 10.) Now place the image on a flash drive and flash you're 360!