I just bought a UHP-H! for myself to replace my BDP-S6500. However, none of my old programming works on the new player.
...

Thanks to Chris for trying to help.

New question: Is it just me, or does the discrete power on above not only turn on the player but also open the tray? For now, it's easier for me to just program the mx850 "on" button to be "home" instead.