I'm not sure how to check the software version it's running, but here's the System Information page of the STB: http://imgur.com/SVa0NzZ (Not sure if unit address is considered private information, like MAC address)
Looking at your STB info from the screenshot above, I'm wondering why your ZIP code is not registered. FIOS operates in a number of cities and they may need that to know your ZIP code in order to know what guide info to feed you. That should have been entered as a part of the original installation.
If you would please, go back to that screen, press the info button to get the extended info and capture the (three) pages of info there.
Also, just to make sure, your ONT is a Tellabs model 612, right? I think so based on earlier information.