System Update Menu option missing.

I finally updated to 5.0 about a month ago and after hearing all this business about stagefright and a possible security update for it. I went to where normally you would check for system updates under the ABOUT PHONE section, and there is no option for it? Any idea where it went to and how to get that option back in the menu? The other strange thing is that the last item in the About Phone menu is "Configuration Version" and it says Not Available. I have a Note 4 at work and it has info there and I imagine there should be on the Note 3 too.
Thanks in advance.