Need to unroot and return to stock
I need to unroot this Sprint GS3, so I can sell it, but I don't know how it works on the GS3. I've rooted a VZW GS3 and put CM on it, but I never had to take it off cause when i sold it in order to get the new Note 3 (which I can't wait to be able to mod) the guy wanted me to keep it Rooted. So Can someone link me to a guide to doing this, I've found a couple on here, just don't know which one is the best route to go with. It currently has the MOAR ROM on it and CWM.