I got my Evo a week ago, version 004 with 2.2. Tried rooting and when I looked at the software it was 2.1 and is running a little sluggish. I want to unroot it and just go back to my stock 2.2 but from what I searched on unrooting it would not load on my pc. Is it possible when I unroot I won't get 2.2 back and are their issues with me rooting on a Mac and then having to unroot on a pc? Also I did not do my root with Unrevoked, i did it from android central instructions. One method of unrooting I tried was to load HTC sync on my pc but it wouldn't load,,,,guess I am just really confused and at a loss on what to do. Sorry if this has been asked and answered. I did try to do a search but nothing helped.