I connect it to my AVR and then to my Sony TV. I have CEC disabled in my AVR but it’s still going through it from the TV Box to my TV.
I’ll try turning it on in my AVR to see if that enables the setting in the TV box …
Nope - still didn’t appear. I’ll have a play. I don’t remember whether it was under System or Sound & Image.
I did a reset and I am now on version 4.40! Still no HDMI control option.
If it works for you, then it should work for me. I’ll investigate.