I have given up on the 6131nw. It finally "took" PVR-0618 but the keys took a lot of pressure to respond, if at all. Buh-bye.
I'm now trying the URC-8910. The up and down and select works but I need to map Thumbs Up & Down.
I found the 8910 manual online and page 24 says to Press & hold SET, then press the "M" key 7 times. Which is the "M" key? I tried pressing M1 but always get Invalid.
[Link: manualslib.com]Thanks a bunch for your invaluable help!