My three year old QN75Q7FAM updated to 1209.3 even though I had auto-updates turned off.
The good news is that after owning this TV for over three years, I now have Dolby D+/Atmos bitstream passthrough! Not having that capability before the firmware update was literally the only complaint I had about this awesome TV. In fact, I had decided not to buy another Samsung because of this even though I know the picture quality is likely unmatched for sets under $5k.
I previously complained quite loudly to Samsung about this oversight by their product team in not including Dolby Atmos capability in the original release. I'm very happy to see they've added it via a firmware update to the OneConnect box.
It's possible they added Atmos before 1209.3 as I was running a very old version before this update.
Thanks Samsung!
