So I have a rooted TB and had flashed a Das BAMF Sense 3.0 ROM before hearing about the GB update, at which point I reverted to my stock Sense backup. Once the update finished downloading, my phone restarted and began installing it, but when the progress bar reached about 25%, i got the exclamation mark error message, and then the recovery screen appears showing the log (it says the update is not verified). Does this happen because my TB is rooted (S-off)? If so, how do I gain S-On again? (I rooted using Revolutionary BTW)