How do I upgrade my Android OS from 2.2 to 2.3 on an HTC Desire? Possible Duplicate:
  How do I update the OS in my device?  




I am carrying a HTC Desire. I want to upgrade the OS from Android 2.2 to Android 2.3. How do I upgrade the OS?
Check out on this following forums


modaco 
Cyanogen 
XDA Developers


Note:  Please ready instructions carefully before performing anything. You can break your phone. You have to do everything on your own risk