lg soundbar nb4540 software update
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Lg Soundbar Nb4540 Software Update ~upd~ Jun 2026

What appears on the soundbar display? How is the soundbar currently connected to your TV? Share public link

Insert the prepared USB flash drive into the USB port located on the back or side of the soundbar. lg soundbar nb4540 software update

Ensure your soundbar is plugged into a stable power source. Do not use an outlet prone to tripping. Step-by-Step Guide to Updating the LG NB4540 What appears on the soundbar display

The LG Audio Remote (or LG Wi-Fi Speaker) app used to support OTA updates, but LG has since deprecated this for legacy models like the NB4540. Many users report the app says “No update available” even when a USB update exists. Always use the USB method. Ensure your soundbar is plugged into a stable power source

If you encounter issues during the update process, use these troubleshooting steps to resolve them:

If the progress bar stops for more than 20 minutes, the file might be corrupted. Download the file again from the LG website, use a different USB drive, and restart the process.