activate Audio HD

[Franch]

Hi
I wish to get better quality in bluetooth audio codecs in my Mi 11 Ultra but there is no way to activate hd audio. I have set developer options to select best audio bluetooth codec but I can't select best codec: device always turns back to predeterminated config. How can audio HD options be activated?

 

[Franch]

I answer to myself. Audio HD can only be set if a bluetooth device is connected.
Problem solved.