Root HTC Desire and upgrade to Android 2.2 (Froyo)
Hi Guys, finally decided to root to get Android 2.2 and this is the simplest way to do it I Found. (everything is free and no extra hardware is needed such as a goldcard)
1. Uninstall HTC Sync and the HTC sync driver if you have them installed. (stops the root, can reinstall afterwards).
2. Download unrevoked (this roots), the 2.2 rom (the android 2.2) and the 2.2 rom radio (goes with the rom).
3. Copy the 2.2 rom (ota22.zip) and the 2.2 rom radio (32.43.00.32U_5.09.00.20.zip) to your sd card.
4. Run unrevoked and follow the steps to root.
5. Go to Market and install "ROM Manager".
6. Go into ROM Manager, select "Install ROM from SD Card", select the ota22.zip, then "OK".
7. Go into ROM Manager, select "Install ROM from SD Card", select the 32.43.00.32U_5.09.00.20.zip, then "OK".
8. All done! rooted and updated to 2.2 
September 6th, 2010 - 20:41
cool just what i need i thought followed your guide but when i started unrevoked it tells me to plug in the phone ans enable usb debugging which i did its as if my phone was not connected i did un install htc sync and drivers could you help? i really need to root