I have the Comcast Cisco RNG200N HD/DVR cable box. In a moment of stupidity, I accidentally did a full reset. I was able to restore basic functionality (01982) as well as restore myDVR(43205) and the exit(39877) buttons (through 3FG's helpful posts), but am still at a loss for the "A", "B", and "C" buttons as well as the 15 second rewind button (swirly arrow). I am trying to find a 30 second skip that will work, but still have not been successful.

Side note: The page up button does the 5 minute skip forward, but the page down button does not skip backward.

Thanks for any and all help.