Hi, i've been following these threads with interest as i've recently had the same problem. I was going to post the same as Brad in that my "EPG Update Interval" was set to "none" and i'm certain that i never touched that setting - i've only had the box for 3/4 weeks. Perhaps the most recent software update changed it?
When i was following SAM's useful guide above i spotted the "EPG update interval" setting and switched it back on and this (along with Point 6 in SAM's guide) seemed to be the ones that fixed the EPG no information issue.
I now have EPG information on about half my channels. There is an oddity with my system were if i have multiple versions of the same channel (e.g. SD, HD and UHD) i only get EPG information for one of the versions, usually the basic one and the other channels simply state "no information" in the EPG. However i think this is a supplier issue as i don't seem to find any options or anything online which links to that problem.