I am annoyed so apologies if my anger comes across in this post.
Samsung 7 series TV’s by default have auto firmware update enabled. Samsung have released firmware 1208 (latest version currently) which doesn’t support SmartThings!!! WTF?!?!?!!? I can no longer control my 7 series with ST.
So in short, Samsung have broken all of their 7 series TV’s. I purchased that TV only because it was ST compatible. Have Samsung ever hear of change control? Pre change testing? Are Samsung using all of our TV’s as their test platform? I am pretty annoyed to say the least.
This has all been confirmed by Samsung on a web chat ID: 
Its been broken for quite a long time now. Someone needs to lose their job over this. Such bad IT management.
From Samsung: (Bear in mind that firmware auto update is enabled by default)
If it is set to auto update, it should. If the TV has updated to the recent firmware 1208 then that means it has the OCF update that was released by Samsung TV/AV. The SmartThings app currently doesn’t support this functionality. However, not to worry, our SmartThings engineers are working together with Samsung engineers to look into solutions for this.
auto update is enabled and the version of the firmare is 1208
so Samsung broke my TV?
It was working fine… then you released a firmware update. Now its broken.
How do I rollback the firmware to the previous version?
The TV isn’t broken, it has received a firmware update that currently means that the SmartThings integration does not support it fully. There is a way to add it back again, but the functionality is limited as it stands. The ticket is a priority investigation at the moment for our Engineers and full support is being worked on as we speak.
Samsung Smart Things is currently unable to control my Samsung TV because Samsung released a firmware update. The TV isn’t broken but its also not working.
I just want to turn it on and off!
How hard can it be?
It terms of coding, it can be rather complex. Essentially the OCF update changed the way that the TV integration platform communicated with SmartThings. Due to this, our Engineers are working on an update that will allow for SmartThings to add TV’s as a device again, with the same support as before.
As it stands, there is a way of adding the TV as a device, but I believe that the function is limited to only being able to turn the TV off.
Are you there, Lewis?
well thats all I need to do
turn it off
Was this functionality disabled deliberately then?
So its been accidentally borked
It was an oversight that was made by the TV/AV side of Samsung, I believe the assumption was that the OCF update would not bear any impact on the SmartThings side.
That was inaccurate, so as it stands our Engineers must come up with a way around this.
The update is in development, as a priority one task.