How to Update LG Soundbar Firmware
Updating LG soundbar firmware can improve Bluetooth stability, HDMI ARC and eARC performance, audio processing, and compatibility with newer LG TVs and streaming devices.
The process is usually simple, but the exact steps depend on your model, connection method, and whether you use the LG ThinQ app or a USB drive.
This guide explains how to check your current version, install updates correctly, and troubleshoot the most common problems so you do not interrupt an update midway.
Why LG soundbar firmware updates matter
Firmware is the internal software that controls how your soundbar behaves.
LG regularly releases firmware to fix bugs, improve lip-sync, refine surround virtualization, and strengthen support for features such as Dolby Atmos, DTS:X, AI Sound Pro, and passthrough over HDMI.
For many users, the biggest benefits are not dramatic new features but small improvements that make the system more reliable.
You may notice fewer audio dropouts, better pairing with subwoofers or rear speakers, and smoother control through a TV remote or CEC commands.
What you need before starting
Before you update, confirm the soundbar is powered reliably and connected to the internet or prepared for a USB update.
Gather the model number from the label on the back or bottom of the unit, since firmware files are model-specific.
- LG soundbar model number
- Stable power source
- Wi-Fi or Ethernet connection, if supported
- USB flash drive formatted as FAT32, if using manual update
- LG ThinQ app installed on your phone, if supported by your model
If you are using a multi-speaker setup with an LG subwoofer or rear speakers, leave everything connected during the update unless LG support instructions say otherwise.
How to check your current firmware version
Knowing your current firmware version helps you confirm whether an update is available and whether the installation succeeded.
Many LG soundbars let you view the version through the display, the remote, the LG ThinQ app, or the settings menu on a paired LG TV.
On some models, pressing the settings or function button on the remote cycles through system information.
On others, the version appears in the app under device information or product settings.
If your unit has a small front display, it may briefly show a code during startup or while connected to the app.
How to update LG soundbar firmware using the LG ThinQ app
If your soundbar supports network updates, the LG ThinQ app is usually the easiest method.
This is the most convenient option because the app can detect compatible devices and download the latest available firmware over Wi-Fi.
Steps to update through the app
- Connect the soundbar to your home Wi-Fi network.
- Open the LG ThinQ app on your smartphone.
- Select your soundbar from the device list.
- Open device settings or firmware information.
- Check for updates and start the download if one is available.
- Keep the soundbar powered on until the update finishes.
During the update, do not unplug the soundbar, force-close the app, or switch power modes.
Depending on the file size and connection speed, the process may take several minutes.
The soundbar may restart automatically when the installation completes.
How to update LG soundbar firmware with a USB drive
If your model does not support app-based updating, or if network updates fail, the USB method is the standard alternative.
LG publishes firmware files for specific models on its support site, usually in a compressed archive containing update instructions and files for a USB drive.
Prepare the USB drive
- Use a small-capacity USB flash drive if possible, since older devices may be more reliable with basic drives.
- Format the drive as FAT32.
- Download the correct firmware file for your exact soundbar model.
- Extract the archive if the download is compressed.
- Copy the update file to the USB drive according to LG’s instructions.
Start the USB update
- Turn the soundbar off.
- Insert the USB drive into the designated USB port.
- Power the soundbar back on.
- Wait for the update prompt, indicator light, or automatic installation process to begin.
- Do not remove the drive until the update is fully complete.
Some LG soundbars display progress through LEDs or a front-panel message, while others provide very little feedback.
Patience matters here; interrupting the process can corrupt the firmware and require service support.
How to update LG soundbar firmware through an LG TV
In some home theater setups, the LG TV can help manage connected audio devices through HDMI ARC or eARC, especially when both products are on the same ecosystem.
Depending on the model and region, the TV may detect available soundbar updates or offer device management features through the TV interface.
If your TV shows a soundbar firmware notification, follow the on-screen instructions carefully.
Make sure HDMI-CEC, sometimes labeled SIMPLINK on LG TVs, is enabled if the device communication is required for detection.
Common problems during an LG soundbar firmware update
Most update failures come from connection issues, the wrong firmware file, or power interruptions.
The good news is that many problems are easy to fix once you know the cause.
The update does not appear
If no update appears in the app or on the TV, your model may already be current, the device may not be connected properly, or the firmware may be distributed regionally.
Confirm the exact model number and check the official LG support page for your country.
The USB update does not start
This usually means the drive is not formatted correctly, the firmware file is in the wrong folder, or the downloaded file does not match your model.
Recheck the instructions line by line and try another USB flash drive if needed.
The soundbar freezes or restarts repeatedly
If the unit becomes unresponsive after an update, disconnect power for a short period, then reconnect and test again.
If the issue continues, contact LG support with the model number, firmware version, and a description of what happened during the update.
The app cannot find the soundbar
Make sure the phone and soundbar are on the same network, Bluetooth permissions are enabled, and the app has local network access if required by your device.
Restarting the router, phone, and soundbar can also resolve temporary discovery issues.
Best practices for a safe firmware update
Updating firmware is low risk when done correctly, but a few habits make it safer and more reliable.
These steps reduce the chance of failed installs and keep your home theater system stable.
- Use the official LG support website only
- Confirm the model number before downloading anything
- Keep power stable during the full update
- Do not unplug speakers, subwoofers, or HDMI cables unless instructed
- Wait for the update confirmation before turning anything off
If you use a smart home setup with Google Assistant, Amazon Alexa, or LG ThinQ routines, retest those controls after the update.
Firmware changes can sometimes reset device behavior or improve voice-command responsiveness.
How to know the update was successful
After the installation, check the firmware version again using the app, the soundbar display, or the TV menu.
Compare it with the version listed on the LG support page to confirm the update was applied correctly.
Then test your usual setup: HDMI ARC or eARC audio from the TV, Bluetooth playback from a phone, and any rear speaker or subwoofer connections.
If sound plays normally and the version matches the current release, the update is complete.