the spectrum is super easy to unroot. If you rooted then you should be able to unroot. Just use the all in one to install recovery (if you don't have it already) and download the v4 stock and stock recovery restore files, place the v4 stock in sd/cwm/backup and the recovery restore in sd directly and then boot into recovery and flash the v4 stock and then flash the recovery restore. Done! it's silly how easy it is. Matter of fact I just typed that from memory and have only done the process like 3 times and it's been a month since I last did it.