I examined the logs for my visitors and noticed a couple of hits for the search “FIOS channel guide not updating”. When my FIOS was installed last week, I had that exact problem and here is what I found out.
Make sure your FIOS cable modem is working. Log into http://192.168.1.1/ with the default admin password combination (look it up) and make sure that your set top boxes are listed.
See that column in the middle of the web page? That lists your PC and your set top boxes. On my installation they are labeled IP-STB1,2,3, etc. and they are all Connection Type: Coax. The setup boxes need the FIOS Internet gateway to communicate via IP to Verizon and get the guide data. If they do not show up there then they are not getting any updates.
One of the Verizon people I spoke with mentioned that some people hardly use the Internet portion of FIOS and were not aware that the service needs both to work. After two weeks all the guide data was expired; once that customer switched on the Internet gateway the guide data came back.
Of course, that wasn’t my problem. For me it was that the splitter installed in my cable line was not up to speed and was interfering with my set top boxes getting the guide data. The tech replaced the splitter and everything started working. That splitter was from my Cablevision installation and the first tech should have replaced it. No hard feelings and I’ve been enjoying the service including the ability to remotely schedule recordings.