I have just bought the Q9FN and never having had a Samsung TV before its been somewhat a bit of a learning curve.
Anyway I have not had the set professionally calibrated (yet) but have unlocked the Cal-Day and Cal-night picture setting profiles from the service menu. They work fine but neither will switch on HDR settings when presented with HDR material from any source, TV native nor HDMI. All the default settings work just find with the same material on the same source. i.e I can see the HDR logo on the picture icon and if I go into settings can see the values have maxed out from the base SDR settings.
I have done a few soft resets but its still not working properly. The set is on f/w 1153.3. Is this a bug or is the something else I need to set on.