Save your working learned signals (from the original remote) for the MV5100 as an .mxd file and email that to me. I can examine them and see what they encode. If they match the signals listed on that page you linked, I don't know if I'll have any more suggestions.

But if they don't match (which seems likely since the signals you pulled in with Universal Browser didn't work) then examining those signals will likely give me a clue what the discrete codes should look like.