Ok, I bought this phone from market means that I am not bound to any operator or carrier. I have rooted this phone long time before, and because of rooting, I couldn't update my phone when phone checks for operating system updates periodically. Now I tried to update my phone to latest available ROM here (http://androidforums.com/htc-desire/177907-froyo-2-09-405-8-update-windows-not-required.html). I renamed and copied the zip file in formatted card (only that .zip file in whole card) and tried to update my phone. Everything seems to go fine but they went down the hill when RADIO_V2 starts to update. I get this error. RADIO_V2 - Fail-PU ... ... Partition update fail! Update fail! Now since the update is failure so I can't use my phone now. If I restart it then phone just hangs on HTC logo. Any suggestions?