LG's webOS user interface (UI) is arguably one of the most intuitive there is ... Just like you clear the cache and browsing history periodically from your computer or phone, or shut down all open ...
LG TVs with WebOS come with a Sound Test option. It is a diagnostic tool that plays a sound ... Also, try to play the audio ...
You start with one service, then another to get a specific show or channel. Before you know it, you're juggling multiple ...
To get the upgrade if you're not automatically seeing it, you can head to Settings -> Support -> Software Update.