Let me preface this by saying I barely know anything about rooting and all of that, so I'm really going to need a pretty dumbed down explanation. I bought my Evo off a friend of mine, tried to update to 3.70.651.1 a few times, getting the android with the exclamation point about a third of the way into it every time and I have to pull the battery. After doing some research it appears being rooted can cause this, and I found out this phone was rooted when he had it. The general consensus seemed to be that accepting OTA updates when rooted is a bad idea. I didn't see any ill effects after I restarted the phone after pulling the battery though. I can't really unroot since my PC is down right now, and frankly I don't really understand half the instructions on how to do it. If accepting OTA updates is a bad idea when rooted, would trying to update it manually be an equally bad idea? Although as far as I can gather I can't manually update without a PC, correct? I'd have run a search, but honestly I've been searching for 3 days now and I didn't understand half of the stuff that I was reading.