On the remote, press the "xfinity" button. Use the left/right arrow
keys to navigate to the gear wheel logo. Press "OK". Use the up/down
arrow keys to navigate to the "Preferences" selection and press the "OK"
button. Press the down arrow to go to the "Notifications" selection and
press "OK". Use the up/down arrow keys to navigate to the "X1 Tips"
choice and press the "OK" key to change the selection from ON to OFF.
Press the "exit" key as many times as needed to get out of the entire
menu tree. (You can also experiment by saying "Notifications" into the
microphone and see if it takes you directly into that menu section.)