Just got my thunderbolt last week and am starting to look at the root process more in depth. I rooted my last phone (MD1) and never regretted it. I see it looks a bit more complicated with the TB. First off, what does "RUU", "S-OFF/S-ON", "hboot" and "fastboot" mean? Also, can anyone suggest the best methods for rooting/unrooting? I need to have a definite way to unroot before i am willing to root. With the Moto, i just ran RSD Lite and boom, back to stock in 5 min. Any similar programs for the TB? Thanks guys.