Default Update unavailable/not working

To start I rooted with Kingo but still stock otherwise. Then settings/about phone/software update and no luck. So I flashed the stock image and pit file so I'm back to no root and full stock. Go back to settings/about/software update and still says (update unavailable) not (no update available) or running latest version. It's an error saying my updater isn't working. I'm on MJ7 and wanting to update to MJE the latest version. Can anyone help? I've tried Samsung Kies and Verizon repair/update on my PC and still no profit. I'm want to update and run the cleanrom 1.5.....