Press and hold the button on the soundbar remote control for a few seconds until the soundbar display shows "REMOTE PAIRING" or a similar pairing prompt.
Press the button on the main unit and the Number 0 on the remote simultaneously. lg soundbar nb4540 software update
In the search bar, type and select your specific model from the dropdown list. Click on the Software & Drivers (or Firmware) section. Press and hold the button on the soundbar
The update will begin automatically. A progress percentage or status indicator will flash on the LED display screen. lg soundbar nb4540 software update
Prevents random power-offs or unresponsive volume controls. Prerequisites Before Updating