The universal remotes that come with many cable boxes don't always work with every device, even from common manufacturers. However, if there are updated code lists, you might try your cable/sat company to see if they have any additional information. I wish I could help further, but it's their remote, and we can't control which codes they have.
I would like to control the volume of my new Samsung HT-BD1250 using my cable box remote control. I tried all the codes listed in the manual but none of them worked. My cable box is Scientific atlanta explorer 8300HD.
My connections are:
HD-DVR to TV via HDMI
HD-DVR to BD1250 via optical cable into the (D.IN 1)
BD1250 to TV via HDMI
Thank you for your help