Note, this tutorial still works however is quite old, read the Easy Jtag 2013 Update version of it 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 Quick Note: If you are upgrading from XBR 8955 you would be best off upgrading to FreeBoot 9199 first, people have had a lot more success updating to 9199 first, then going to the latest 13604 as covered in this tutorial. If you are on 8955 you can follow this tutorial here to update to 9199. If you are on 9199 or higher just proceed with this tutorial. 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 Nand Flasher 360 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 Note: If you are unsure if your console is an Xenon, Zypher, Falcon, Jasper 16mb, Jasper 256mb or Jasper 512mb now would be a good time to make a note of it. As you can see in the image below the revision of the console and nand size is displayed, you will need to know this later on: 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: You should already know your consoles CPU key, however if you do not it's pretty easy to find it out. First: Connect the 360 to the TV with the Component or VGA cable (Xell / Xellous do not not work with HDMI so you will just get a black screen) Power on the console with the DVD eject button Have a camera ready Wait until the fuse sets are shown Take a photo quickly as they will usually scroll off the screen fast Combine fuse sets 3 and 5 or 4 and 6, this will give you the consoles CPU key Fuse set example: (Image found on Google) Take line 3 and 5: 3= E42D681ED06A6D1C 5= 1FFD8E48C56A2058 So my CPU Key is: E42D681ED06A6D1C1FFD8E48C56A2058 Now you have your current nand and CPU key we can build an updated nand. 3. Setting FbBuild up and building your new nand: You will need to download the following: Fbbuild 0.33 - this is the program that will build your updated nand 13604 data - this is the data for the 13604 Microsoft Dashboard First unzip Fbbuild 0.33 – you should now have some files / folders like in the image below Now go in to the 13604 folder, you want to unzip the 13604 data in to this folder. You should have the files in the 13604 folder as seen below. 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 Note: FbBuild will now extract your current smc.bin, kv.bin and smc_config.bin straight from the nanddump.bin, it should also mirror any existing block remappings from the nanddump.bin to the new nand you are building. You are now ready to build your new FreeBoot nand, to do this you need to open command prompt (windows key + r, type in cmd and press ok) You need to navigate to the fbBuild_0.33 folder, in my case this was on my desktop so all I had to do was type cd desktop (as the command prompt opened in my user folder) then type cd fbBuild_0.33 Once in the fbBuild_0.33 folder we can now build the nand To build your hacked nand type: fbbuild.exe -c <your console revision> -f 13604 -d mydata updflash.bin Type one of the following depending on which revision your console is, this can be: xenon, zephyr, falcon, jasper, jasper256, jasper512 Note: if you do not know which revision your console is read the above part of the tutorial on dumping the nand for a way to findout, Nand Flasher 360 will show you the relevant information. Do not guess if you are unsure! As my console was a Jasper 512 I typed: My nand was then built without any errors: We are now ready to flash the new updated nand to the Xbox 360. 4. Flashing the new nand to the Xbox 360: Download Nand Flasher 360 if you have not already, and unzip this to your USB drive. 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: Thats it your console should be updated! good luck and if you have any questions I will do my best to answer. 5. FAQ: How do I restore the avatars? Spoiler 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 can be downloaded here Simply extract the $SystemUpdate a Fat32 formatted USB drive, the USB drive should look like this: 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. How do i format my USB drive to Fat 32? Spoiler Go to My Computer, right click on the USB drive and select format Select Fat 32 and Default allocation size, then press start.