BR, your upgrade is missing about 8 functions from the original remote. I've got the same GPX dvd player and used your upgrade and it worked well.
Since I have an 8810 (an aging one at that) I created an upgrade that has all the functions from the GPX remote.
You can find it at:
http://www.hifi-remote.com/forums/dload ... le_id=5101
What is weird is that the original remote has an unlabeled button. It does something but I don't know what. I've also put that into my upgrade.
GPX D1816SIL
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