I am currently rooted running Ultimate Droid 2.0 and I need to return my phone over a faulty g-sensor. I'm trying to find the stock ROM image for whatever, 2.1, 2.2, but I can't. I was told this was the way to unroot, or the easiest way to do so. I am on a Mac and instructions on how to root were hard enough to find. I can't find any for unrooting. So I'm guessing a stock ROM is the fix? Can I have a link please?