[Q] i337 4.4.4 Rooted. How to Unroot and return to factory topic

I saw a thread on how to unroot s4 on 4.4.4, but I can't find it anywhere. It's my wife's phone so I just want it to be returned to stock if possible so she can update to any new updates that come out soon. I used the odin towelroot method to root. I'm using safestrap as well. Any help would be great