repeated dropping of the remote caused me to have to get a new one. have the new, (replacement) one and am trying to get it to work with the comcast box.. no luck so far.... tried the 1376, no luck, (haven't tried it with the zero in front yet).. red light is coming on when I press a button- so seems like it's working.. followed the steps above to program/ then unlock the remote. so certainly seems like it's working... I will try again, (with code 01376 if no luck will try 01982) and update it working or not. would rather not have to go back to comcast customer service, as they are NO help...

Comcast box is Scientific Atlanta, Explorer 3100.

I'll keep you posted.
Thanks,