I rooted 2.1 with the intention of applying the RUU, but I got the OTA the next day. I applied S-OFF using unrEVOked forever and I have the Superuser Permissions app on my phone. Now I'm unable to update because I have ClockworkMod recovery. I know that I'm supposed to go back to stock recovery using the PB31IMG package, but I have no idea how to do this. Everyone says that I just need to put the .zip on the root of my SD card and it will just happen, but nothing happens when I boot into hboot. Can someone please help me out here?