I assume this is a really easy one for you all, and I just need some general direction (there's just so much info to wade through here): I have an unrooted Motorola Droid 2.1. It keeps offering to upgrade me to the official 2.2. I want basically a stock 2.2, except rooted so that I can only do one thing: wifi tether. I don't want to overclock, I don't want any sort of custom stuff -- I just want to be able to run a wifi tether. Where should I start? Is it safe to just go ahead and upgrade to official 2.2 in the meantime?