all the contents here have been moved to my new blog without the subdomain.. please go to http://override182.net for further support, issues or questions. I will be active replying there.. thanks

This guide is not yet complete and to be updated from time to time.. please stay tuned..

To easily S-OFF your Desire HD, we are going to be using Easy Radio S-OFF tool since you can easily S-ON back. The other method which is ENG Hboot S-OFF method also works but you cant easily S-ON back your device unless you flashed via RUU. There are currently no RUUs available for SIS SET (1.32.707.5), so the current method is just to backup your own stock rom for you to restore back later when needed.

Read more to view the full guide :

Apart from this guide, here is the original guide taken from XDA.

1. You must have permaroot on your Desire HD.

2. Download Desire HD easy radio tool.exe via this link

3. Extract it into a folder on your desktop then run the .exe on your computer.

4. Connect your device as only charging and make sure its USB debugging enabled (settings>applications>development>usb debugging)

5. Click on the 1st option which is “Radio S-OFF, Super-CID and SimUnlock”. A super user popup request will appear. Click to allow it.

6. The tool will run under 20sec and if everything is good, it will say finished. You are good to go but make sure that you keep safe of the part7 backup which has been made in your SDcard.

7. To check S-OFF, switch off phone completely by removing battery out or disabling fastboot (settings>applications>untick fastboot)

8. Switch on phone via pressing Power + Volume down button for 3 sec until you see 3 android skating. At the top, it should now say ACE PVT SHIP S-OFF

9. If it is S-OFF, you can now download Rom Manager from the market then install clockworkmod recovery. Clockworkmod recovery is the tool to flash custom rom, backup and restore nandroids, wipe battery stats/cache/partition and etc.