Comcast does not want the "reset" to be widely known because it causes more problems than it solves.
You could always stop at a Comcast service center and swap out the box... It might be easier.
Dweber54 wrote:
Comcast technical support has been unable to help me for days. When I transfer service to my new address they somehow created two accounts instead of just one. My DVR and one set-top box are connected to One account incorrectly. No matter what they've done to try and switch them to the correct account it hasn't worked. I've given up on trying to save the shows I had on DVR, just want to do a full factory reset of the box. A reboot doesn't help. Have also been told twice now that they were just going to overnight me new boxes, only to call back the next day and find out there was no such order placed. I believe a factory restore or I have to restart and enter account information from the very beginning may work, it is worth a try, but have been unable to find instructions on how to do this online. Can anyone help?