NOTE: I posted this on another forum, so this is actually my own work. Also some people will be aware that you don't need Xebuild to flash kvs to the nand, but i like to use it anyway. In addition I will adding pictures and possibly a video tutorial soon, however i am too busy to add that at the moment..

I prefer to flash my kvs to the NAND as it stops any idiot stealing them with a tool/plugin. Recently i have seen people having issues with flashing kvs to the nand, so i am going to make a tutorial.

How to flash a kv to the NAND tutorial:
1. Dump your original nand using flash 360 on the console. To do this, download these files, and put them on a USB stick, which you then insert into the console.
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Load the xex file with xexmenu or freestyle dash, and follow the on screen instructions to dump your nand.

2. Move the flashdmp.bin on your USB stick to your desktop, and copy to a folder named backup on the desktop aswell.

3. Download 360 flash tool and open it.
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4. Upon first opening it will you give a screen regarding CPUkeys. Firstly tick XEX 1 at the top, then tick CPUkey. Then enter your cpukey for your console (can be found by booting console into xell with eject button). Then click add cpukey, and the key will move into the multiple cpukeys box. Then click ok.

5. Click ... under open file, and select the flashdmp.bin on the desktop.

6. Copy your DVDkey, OSIG and region on the right, into a notepad.

7. Click import on the bottom left. Then tick key vault. Next click ... to the right of the key vault box, and select your new, unbanned kv.bin (or kv_dec.bin). (Make sure the KV is the right type for your console (e.g type 1 or 2), and matches your console version (e.g. slim or phat) - if it is not a phat/slim, then use the kv converter on this forum). Then click ok.

8. Now save the updated nand to a folder called updatednand on the desktop and call the file flashdmp.bin

9. Close 360 Flash tool. Download and open jrunner. This has more drives available than 360 flash tool, so is better for patching the kv.
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10. On Jrunner, click load source on the left. Select flashdmp.bin in the folder updatednand. Then type your cpukey in the cpukey box (can be found in xell).

11. Click advanced > Patch Nand, then tick patch key vault. Now from the notepad created earlier, change the region, dvdkey and osig, so that they match what is in the notepad. You may not need to change the osig or region, if they already match. Also leave the serial and console id alone. Then click ok.

12. Now navigate to the jrunner folder, and go to the output folder. Your updated nand will be here. In the updatednand folder on your desktop, delete flashdmp.bin, then move the file in the output folder of jrunner into the updatednand folder.

13. Many people think they are ready to flash the kv now, but they are wrong. One more thing needs to be checked and it is best to rebuild the nand with xebuild. Download and open Xebuild:
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14. Click open near the top, and select the nand file in the updatednand folder. Now click save, and make a new folder on the desktop called FINALNAND, and select this as the directory to save to.

15. Enter your CPUkey in the CPUKey box (can be found in xell). Then click check KV in the bottom right. If Requires FCRT.bin is true, then tick Disable FCRT.bin check under special patches. If this is not done, then your console does not boot or boots with a black screen. If Requires FCRT.bin is false, then you don't need to do anything.

16. Check that the kernel version is 2.0.16756.0 on the left. Now click generate hacked image, and wait for it to complete.

17. Once completed a file called updflash.bin will be created in the folder called FINALNAND on your desktop. Put the file updflash.bin on the root of a USB stick, and insert the USB stick into your console.

18. Power on your console with the eject button to boot into xell. Wait for it to find the USB with the updflash.bin on it. Once found, it will wait around 30 to 60 seconds before flashing it. It will tell you when it is complete.

19. When it says 'image written', turn of the console by the power button. Then unplug the console from the power supply for 30 to 60 seconds (to allow the chip to cool and SMC data to reset).

20. After 30 to 60 seconds is up, plug the console back in and boot normally, and your console should boot as it normally does - with the new kv.


I have flashed many kvs to the nand, and had boot problems and black screens on several occasions. I managed to fix these problems, to come up with the method above. Ever since, I have used the method above, I have had no boot issues or black screens. The method above is my own work and is not copy and pasted from elsewhere.

If you have any questions or issues, i am more than willing to help.
Thanks.