This guide aims to cover everything required to update your Jtagged Xbox 360 to the latest 13604 Kernel / Dashboard. I have tried to make the guide as detailed as possible so people of all skill levels can follow it successfully.

Since my last guide on updating to 12611 things have got a lot easier, it is also now a lot harder for you to mess anything up. So fear not if you follow this guide you should be able to updated without any problems what so ever.

I have provided all the tools / files you will need to complete this guide, however there are a few things will you need to provide yourself as they are unique to your console, these are:
A dump (copy) of your current Freeboot nand
Your CPU key
The four main parts of this guide are:
How to dump (backup) your current Freeboot nand
How to findout my consoles CPU key
Building your new nand
Flashing the new nand to the Xbox 360

1. How to dump (backup) your current Freeboot nand:

We are going to take a copy of your consoles existing nand, FbBuild will now extract your current smc.bin, kv.bin and smc_config.bin straight from this backed up nand, it should also mirror any existing block remappings from the to the new nand you are building.

This means you do not need to provide any additional files other than a backup or your nand, or worry about remapping bad blocks your self

Basically if you have a working Jtag you should be able to update very easily by following this guide.

To dump (copy) your nand from the Xbox 360, we will use a program called Nand Flasher 360
Download Here

When you have Nand Flasher 360 downloaded, unzip it, then copy it to your USB drive.

Connect the USB drive to your console and load Nand Flasher 360 with your favourite file manager.

When Nand Flasher 360 has loaded select Dump Nand / Flash on the right menu, the nand should then dump to your USB drive as a file called orig_nand.bin

Once the dump has finished you can connect the USB drive to your computer and copy the orig_nand.bin off it.

2. How to findout my consoles CPU key:
Open up xbox 360 tool and open you nand in there at the top you will see setting click that and go to keys there your CPU key will be posted

3. Setting FbBuild up and building your new nand:

You will need to download the following:
fbBuile_33

First unzip Fbbuild 0.33 to desktop

Now in the fbBuild_0.33 folder, open the 1blkey.txt and paste the correct 1blkey in there. The correct key is: DD88AD0C9ED669E7B56794FB68563EFA

Next go in to the mydata folder and open cpukey.txt

You need to paste YOUR cpu key in here, it will not be the same as mine.

Next copy the dump of your current nand in to the my data folder, this should be renamed to nanddump.bin

Now open up CMD and type cd desktop then after that you need to put the follow depending on the type of jtag you have

fbbuild.exe -c xenon -f 13604 -d mydata updflash.bin
fbbuild.exe -c zephyr -f 13604 -d mydata updflash.bin
fbbuild.exe -c falcon -f 13604 -d mydata updflash.bin
fbbuild.exe -c jasper -f 13604 -d mydata updflash.bin
fbbuild.exe -c jasper256 -f 13604 -d mydata updflash.bin
fbbuild.exe -c jasper512 -f 13604 -d mydata updflash.bin


We are now ready to flash the new updated nand to the Xbox 360.

4. Flashing the new nand to the Xbox 360:
Nand Flasher 360 for Xbox 360 v1.2.0 Download

Get the one for the xbox 360 and put it on a flash drive note you should already have this from some steps before the fbBuild

Now copy the updflash.bin you just built to the USB drive

Now we need to load NAND Flasher 360 on the console, do so using your favourite file manager, XEX Menu or FreeStyle Dash will work fine.

Simply browse the files on the USB memory stick and load Nand Flasher 360:

On the right menu select Write NAND / Flash

This will bring up a file browser, select the USB drive

now select your updflash.bin, you will be warned not to press anything on the console as it is flashing.

Press ok and the nand will be flashed to the console.

After the flashing has finished it will be verified, all been well your nand will have been flashed successfully.

Press the on-screen button shutdown to turn the console off

Unplug the power brick and leave it disconnected for two minutes (or turn the 360 off at the plug)


Re connect the power brick, power the console on and if everything has gone ok your console should boot in to the 13604 Dash.

You can verify the console is on the 13604 by looking in system settings:

How to restore your avatars:
Restoring the avatars is simply a case of you running the official Microsoft 13604 update,only do this after you have upgraded to the 13604 dashboard using this tutorial. If you run an update on a Jtag with a higher dashboard than you are currently running you will find that you no longer have a Jtag.
The Xbox 360 Kinect Dashboard Update 2.0.13604.0 With Avatars download here Xbox 360 Dashboard Update 2.0.13604.0 Download with Avatars

Simply extract the $SystemUpdate a Fat32 formatted USB drive

Just insert the USB stick in to the 360 and you will be asked to update, say yes and the 360 will re start and your avatars will be restored.

There you go, you now have the 13604 dashboard on your Jtag with working avatars