Lg Soundbar Nb4540 Software Update -

: If the update fails or the soundbar becomes unresponsive, you can perform a factory reset by holding the Volume Down Sound Effect

Fixes lip-sync issues occurring over HDMI ARC and optical connections. lg soundbar nb4540 software update

If you run into issues during the process, use these troubleshooting steps to resolve them. "No File" or "Error" Displayed on Screen : If the update fails or the soundbar