I have the Official OTA 2.1 update and want to factory reset my phone. I would like to reset the phone because it is sluggish. I had the leaked 2.1 ROM on my SD card and was able to flash it. Where can I download the actual Official 2.1 ROM itself? I get a red triangle now when I try a factory reset on bootup. I don't care about rooting..I just want to do a clean reset.