I have a lot of problems with our Motorola DVR box from Comcast. I have gotten the green screen a lot. I have to turn it on and off, unplug it, etc, etc. Sometimes I get a message saying that the display doesn't appear to support the display mode or something to that effect.
That is why I was checking this board. I wanted to be sure it was a problem with the box and not my TV.
I also have audio problems. Somebody was saying that if you hit the cable button and then mute on the remote, it will unmute. I think I've tried this and it doesn't work. The only thing that seems to consistantly turn the sound back on is playing something recorded, then going back to live TV.
How did you upgrade firmware?