XRE-03062 - puzzling problem

An x1 update about a week ago forced our cable box to start up on the Bally Sports Channel with a message stating that it was no longer available due to a foreclosure, but it was impossible to change the channel without the XRE-03062 message popping up and then resetting to the Bally channel after a time out. Some restarts by phone or through the xfinity assistant or x1 box settings worked to bring normal functions back, some didn't, but all were short-lived, no permanent fix.

For the past several days, the only channels that work are 1873, 1874, and 1875 (all MGM+) and while they have been showing lovely old movies, we pay too much money to Comcast to be getting only three channels. There is no access to channels in the lower range for news or network programming and attempts to change to one of those channels generates the XRE- error message which times out and then reverts back to MGM+.

The interesting thing is that preset scheduled recordings in the lower, mostly 300-400 range, are still working and can be viewed and are in excellent quality but can't be watched live because the box will not tune to those channels. The only resolution provided to us after seven days of restarts, chats, and calls is that a technician will come here on Monday, but I cannot imagine how a tech will be able to help.

Last weekend's software update made other unwanted changes. Our TV is set up to turn on every morning as our alarm, so we keep our cable box on at all times, but now when we turn off the TV, it turns off the main cable box as well all televisions in other rooms that have the remote xfinity boxes attached to them, even if xfinity is not being used. The update also reset the screen saver setting, which we had turned off because if the TV starts up with a screen saver and no sound, the TV isn’t a very good alarm for us.

For the amount of money we pay to Comcast each month, we should be able to watch more than three channels, channels in such a high range that I never even knew existed until this week.

The most troubling part is that from Comcast's vantage point, everything looks good to them, even though it is not. 

I am seeking advice. Has anyone seen this before? Might a new x1 box help? Is there a fix?