My remote will not work for cable box it only blinks red when trying to use it. My remote will change TV volume and Power on off. I change the batteries in this didn't help.
on your X1 remote press the setup button until the remote's LED changes from red to green. Then press the Xfinity button and type in the 3 numbers appearing on the TV screen.
We are having the same issue. However, got stuck on the screensaver screen showing photos. So we are not able to see the numbers?!? Can you help?
unplug the set top box from AC wall power plug for 30+ seconds and plug back in.