I've been trying to figure it out myself. There is a download in the files section for HLN that is advertised to work for HLP. Here's a link to the thread that references it (and gives you all the info you care to know on the topic):
[Link: remotecentral.com]Here's a link to the file:
[Link: remotecentral.com]I'll find out Friday how this works "out of the box". I have the MX-850 and Samsung HL-P6163W. Sounds like everyone needs to figure for themselves whether their firmware is right or not.
Good luck!