FWIW, this morning was the 1st time I have ever had to reboot my 811 to get the EPG populated.
After turn on this a.m. I got the typical guide info download screen the 1st time I hit the "GUIDE" button. But the status bar stopped just before getting all the way to the right & when the window went away there was no info.
I tried it a couple of more times with the same result & eventually got it to start cycling. It would go almost to the end & start over repeatedly. I let this go on for a while just for fun & to see if it would ever take the whole DL.
When I decided to stop it there was some guide info but some of it was right & some of it was wrong; i.e., The History Channel was labeled NHL Center Ice, etc.
So I just did a front panel power reset after which everything worked fine, as usual. The EPG was populated until Wed. morning - almost exactly 48 hours.
BTW, how many of you knew that you can skip back & forth in the EPG by "typing" a number of hours with the keypad & hitting the blue > (BROWSE) & < (THEME) buttons just like with the PVR/DVRs? Unfortunately you can't do a 24 hr skip but with "only" a 48 hr guide I guess it's not so necessary.