i was using my home theater, connected to my TV with an optical cable, and all was fine. But suddenly, the sound stopped, and every time I try to change the sound level, the home theater showing the message 'Not available'. The issue is the same event with native board app such as youtube.
The only thing that is working is the FM station ...
I tryed to reboot, update, reset. Nothing make it better.
If you have any idea about this before I call the support center it will be appreciable.