I have tested v1.39 now. Denon receiver volume works great.
Button response is much better now, but after several button presses the module is locked, or at least apears to be locked.
Going to the homepage and then back to the module it works again.

Also Audio+/- and Subtitlr+/- does not work on DVD2500(blueray).
The codes that work on this player is:
Audio + 02 49 2B 2B 00 00 00 03 41 32
Audio - 02 49 2D 2B 00 00 00 03 41 34
Subtitle + 02 4A 2B 31 00 00 00 03 41 39
Subtille - 02 4A 2D 31 00 00 00 03 41 42

Thanks for the good work!
Regards
Jesper