Ok So i was a very happy with my phone at Rooted 2.2. then comes and update and while trying to update i had to get the stock app back on the phone so i flashed my phone to version 2.1 by mistake. now im trying to upgrade it to 2.2 but i cant seem to get it to work. I had the phone rooted using this method.
[GUIDE] How to root Android 2.2 on the EVO 4G - xda-developers
So now anytime i try the OTA or the connecting the usb it fails. any help please