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Tutorial:
How to Update Your RGH NAND LDV After a Retail Update (For Dual-NAND Consoles)
By: Xbox360Xperts

This tutorial will give you a step by step How to Update Your RGH NAND LDV After a Retail Update on a Dual-Nand Console Equipped with a Cygnos360 V2.

What you'll need:
Cygnos360 V2 Toolbox: [ Register or Signin to view external links. ] V2 Toolbox 1.10 beta 5.rar
Cygnos360 V2 Drivers: [ Register or Signin to view external links. ] V2 Driver 1.01.rar
360 Flash Tool: [ Register or Signin to view external links. ] Flash Tool0.97.rar


NOTE: This does not update the dash version of the RGH/JTAG NAND. It simply allows the current version to work after a dashboard update on the Retail NAND. If you are looking to completely update the RGH NAND to a newer version dashboard, please see my other tutorials.

ALWAYS start by backing up our NANDs. If you've backed up your NANDs in the past then you'll only need to backup the new retail NAND after you've updated on Xbox LIVE. YOU MUST BACKUP YOUR RETAIL NAND AGAIN AFTER YOU UPDATE. IF YOU OVERWRITE THIS ON YOUR XBOX ACCIDENTALLY THEN YOU MAY NOT EVER BE ABLE TO GET BACK ON LIVE AGAIN. This is explained in steps 5-7. If you've already done this or know how you can skip down to step 11.

1. Plug in your Cygnos360 Chip via USB to your computer. Download and install the drivers as necessary using the link included above.

2. Downloads and extract the Cygns360 V2 Toolbox using the link included above.

3. With your xbox powered off launch the Cygnos360 V2 Toolbox. You should see the GUI similar to the image below.


4. Flip the switch on the side of the xbox and notice the bottom right corner of the Cygnos360 Toolbox changes to which NAND device we are accessing showing "Xbox360" or "Cygnos360".




5. Let's start by backing up the retail NAND. Make sure the switch is set so that the bottom right corner of the Cygnos360 Toolbox say "Xbox360". Then click on the "Read Flash" tab at the top left of the toolbox. Finally click the "Browse" button.


6. Create a folder to your liking and then add a name to save the NAND as. I typically put in "Retail" of some sort so that I can keep track of the NAND images I have backed-up. Once you enter a name, press the "Save" button.



7. You will be back at the main screen of the Cygnos360 Toolbox. Now click the "Read" button and wait for the NAND to be completely backed-up. Once the process is completes you will have a backup of your Retail NAND for whichever dash version you are currently on.


8. Once the process completes flip the switch over to the other side so that the lower right-hand corner says "Cygnos360". Make sure you're still on the "Read Flash" tab and then click the "Browse" button.


9. Similar to before name your image. I typically call it something with "Glitch" in it so that I can keep my NANDs organized.


10. Again you will be back at the main screen of the Cygnos360 Toolbox. Now click the "Read" button and wait for the NAND to be completely backed-up.


11. Once the process is completed you will now have current backups of both your retail and JTAG NANDs. Now we need to get the CPU key for the xbox in order to properly decrypt the NAND and be able to edit it. If you already have your CPU key you can skip down to step...
Plug in the xbox and make sure that the switch of your Cygnos360 is on the JTAG side. Also plug in an ethernet cord to your router as we will be accessing via network.


12. Power on the console by pressing the eject button and leave the tray open. This will boot into Xell Reloaded and give us the keys. Once Xell is fully loaded you will see something similar to the image below.



13. You can either manually type the keys into notepad or you can open a browser window and type in the IP address as shown on your screen. You must use Firefox or Google Chrome as this does not work with Internet Explorer. Once you type in the IP address you should see a screen similar to below. You can now copy and paste your CPU key.


14. Open up 360 Flash Dump Tool (Link included at beginning of tutorial). You must run this program as Administrator on your computer for it to work so you may have to right click and "Run as Admin". Once it opens click on "Settings" and then click on "Keys".


15. Paste or type in your CPU key and click the "Add CPU-Key" button, followed by "OK".



16. You'll be back at the main screen of 360 Flush Dump Tool. Now you should click the "..." below the Open File in Top Left corner.


17. Browse to the location where you've backed-up your latest retail NAND and open it. If you've got the correct CPU key entered into 360 Flash Dump Tool you should see something similar to the following:


If you see something simlar to the image below then you likely have the wrong CPU key entered. Go back to step 15 and ensure you've got the correct CPU key.


18. Since this is our retail NAND we are not going to be editing anything. We are just checking the "Lock Down Value" of our console, which is shown in 360 Flash Dump Tool as "LVD". In order for our JTAG image to boot it must be Zero-paired with the console. Make note of the current highest LDV shown in Patch 0 or Patch 1, whichever is highest. In the example below the LDV is 6.


19. Next open the latest working JTAG NAND that you have previously backed-up. If you have not backed up the JTAG NAND go back to step 8 and back it up now. Note the LDV of our JTAG NAND is currently 5, which is why on a Dual-Nand box that the JTAG NAND will not boot. We must patch this to match the information stored on the console.


20. Click the "Patch" button.


21. You will be presented with a new window. Check the "Patch Headers" bx and note the LDV of the Patch 0.


22. Now enter the LDV that we got from our updated Retail NAND in step 18. Typically this is just (1) more than the current value, but you should be certain it matches the retail NAND. For this example the value would be 6. Click the "OK" button.


23. You will be presented with a Save window. Enter a new file name and click the "Save" button. I recommend that you do not overwrite your old backup in case you ever get an error and need it. Worst case you could always create a new NAND as explained in my other tutorials.


24. You will be dumped back to the screen that we were on before showing the old NAND still. In order to check the NAND we just created click the "..." and browse to our newly patched NAND.


25. Select the NAND we just saved in the last step and click "Open"


26. Verify that the LDV has been correctly patched to match our Retail LDV.


27. Close out of the 360 Flash Dump Tool and return to Cygnos360 V2 Toolbox. Make sure that your console is powered off and that the switch on the xbox is set to the "Cygnos360". Click "Program Flash" tab at the top left and then click the "Browse" button.


28. Browse to the newly patched glitch NAND that we just created and click "Open".


29. Double-check that you are on the right switch setting so that the bottom right of Cygnos360 Toolbox says "Cygnos360" and not "Xbox360". Also check the filename to make sure you selected the correct NAND image and click "Program"


Upon completion of the wiritng you should be able to power on your xbox and boot into the RGH dash.