I'm sure this has been covered but does anyone have a WORKING link to an ruu to unroot and return a thunderbolt to stock? All the links are either dead or have been pulled that I can find. I just want to unroot and return to stock update to the latest ota and put it away as a spare phone incase anything happens to my RAZR or my wife's icrap4. Thanks in advance as these forums rarely let me down. You guys are better than any tech support I've ever used.