Okay so you downloaded DROID 4 utility on to your windows computer.
Plugged in your phone.
Ran the program.
Chose unroot and it ran all the way through and said it was successful.
Try doing this. Do a complete factory reset. Wipe all your data and cache.
Try the unroot method again.
I'm trying to do some research to help you out man. We'll get it figured out
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