This tut briefly explains how to fix a jtag that will not turn on due to a bad flash.

Preliminary Step (Must force nand into recovery)

- in order to do this you must short out the nand chip by laying a wire across from one side to the other side
- Then while holding a wire across plug the 360 power supply in and if the light on the power supply remains orange the nand is in recovery mode and you are ready to proceed


1.) Erase your Nand

ex: C:\nandpro\nandpro lpt: -r16 test.bin 1 1 --> this command will attempt to dump your keyvault if you get a flash config and it succeeds than your nand is able to read and write again.

- At this point i would suggest erasing the nand (ONLY DO THIS IF YOU HAVE PROPER BACKUPS OF YOUR NAND)

To erase the nand go in to the nandpro directory ex: C:\Nandpro\ and type type: nandpro lpt: -e16 0 400

This will completly erase the nand than just flash your original back or the proper version of XBR (If you flash your original back you must remove the jtag wires or the console will not start up)



2.) Flashing XBR to your nand

- Grab the XBR_8955 matching your board from Xbins
- Go to your nandpro20b folder
(assuming you already have your cpu key, orig.bin, rawkv.bin, and rawconfig.bin from origional nand dump)If not do the following 2 steps if possible)
- ex. nandpro orig.bin: -r16 rawkv.bin 1 1
- ex. nandpro orig.bin: -r 16 rawconfig.bin 3de 2

- Now that you have extracted your keyvault and config blocks from your orig.bin, inject them in the xbr_8955.bin of your motherboard version :
(Rename the xbr_8955.bin of your board to xbr.bin to simplify things)
- ex. nandpro xbr.bin: -w16 rawkv.bin 1 1
- ex. nandpro xbr.bin: -w16 rawconfig.bin 3de 2
- Now that you've injected your keyvault and config into xbr.bin all you need to do is flash is back to your nand.
- ex. nandpro lpt: -w16 xbr.bin
- Once done , unplug lpt cable from pc (make sure you dont unplug the consoles power first always unplug the lpt first), turn on xbox and you will have xbr


3.) TuT How to Change XBR to FreeBoot

- Have your Orignal Nand and cpu ready
- Open freeBOOT Toolbox Maker v2 or any other freeboot image maker
- enter your cpu key and select your motherboard
- Hite Genertate freeBOOT and you will be told to select your nand
- after its finished rename the freeboot.bin file to updflash.bin
- copy nand.bin/updflash.bin/Flash360.xex/Media to the root of a flash drive
- start your jtag with flash drive plugged in
- go to games and then xexmenu
- press rb and click on Flash360.xex
- press A on your controller and then Press B then press A again, and finally back twice
- When finished your console will shut off, wait 1 to 2 mins then turn back on
- Congratualtions you now have kernel 2.0.9199.0


Final step(If Freeboot Image is Banned)How to Unban freeboot Image

1.) put cpu key into keys in 360 flash tool
2.) open freeboot image
3.) enject the kv_dec.bin
4.) patch the image
5.) Rename to updflash.bin(if going from xbr to freeboot)
6.) Put flash 360 and updflash.bin in the root of the usb stick, start 360 and go to xex menu
7.) press rb and click on Flash360.xex
8.) press A on your controller and then Press B then press A again, then back twice
9.) When finished your console will shut off wait 2 mins then turn on
10.) You are now unbanned and able to go online

can someone please help me aim: crazyxboxmodder

added more details, and i have the nand and cpu key

problem with the harddisk, unplug it and then power your 360 if it boots up it will be a faulty harddisk.
Might be a problem with the filesystem as well so if you are lucky you can get it to work if you have a backup.
If you dont have a backup you will have to buy a new one I guess.