Soundbar Firmware Update via USB: Step-by-Step

When does a soundbar need a USB firmware update?

Most modern soundbars include Wi-Fi and Bluetooth radios for over-the-air updates, but many models, especially budget bars, rely on a USB port for firmware updates. According to the Bluetooth SIG, Bluetooth Classic is the standard radio protocol behind wireless speakers and in-car entertainment systems, but it does not provide an internet connection; only Wi-Fi or Ethernet can deliver automatic firmware updates without user action.

A USB-based update is the only option for soundbars without network capabilities, and it is also the fallback when over-the-air updates fail because of a dropped connection or a partial download. See our soundbar basic setup guide and soundbar firmware updates for related details.

• The soundbar has a USB port but no Wi-Fi radio
• Over-the-air update fails repeatedly or the bar restarts mid-update
• The maker's support page only offers a downloadable file, not a network update
• You want to perform a clean reinstall of the latest firmware after a reset

Finding the correct firmware file

Begin at the maker's official support website. Locate the support or downloads section, search for your exact soundbar model number, and look for a firmware or software category. The model number is printed on the product label, typically on the rear panel or the bottom of the bar.

Download the firmware archive and extract it on a computer. The archive usually contains a readme text file with installation instructions plus one or more firmware files. Read the instructions for your specific model, because the file layout can differ between brands.

Preparing the USB drive

The USB drive must be formatted with the FAT32 file system for most soundbars to recognize it. Attach the drive to a computer, open the disk utility or file explorer, and format it as FAT32. Use a drive of 32GB or less; some soundbars have trouble recognizing larger drives even if they are FAT32-formatted.

After formatting, copy the extracted firmware files, not the archive itself, into the root of the drive. Do not create subfolders unless the maker's readme explicitly says to do so. Some soundbars expect the firmware files to be the only items on the drive, so remove unrelated files before connecting it.

Performing the update step by step

Once the drive is ready, follow this sequence. Power the soundbar off, connect the USB drive to the soundbar's USB port, then power the bar back on. On most models, a message appears on the front display or on the TV screen asking if you want to update the firmware.

Use the remote control to confirm the update, or navigate to the soundbar's settings menu under System or Support to select the USB update option. Do not unplug the soundbar or remove the USB drive while the update is in progress.

• Download the firmware file from the maker's support page
• Extract the archive on a computer and read the readme file
• Format a USB drive as FAT32, 32GB or smaller
• Copy the firmware files to the root of the drive
• Power off the soundbar and connect the USB drive
• Power on and select the USB update option from the menu or remote
• Wait for the update to complete and the bar to restart
• Remove the USB drive after the restart

Verifying the update and troubleshooting

After the soundbar restarts, check the firmware version in the settings menu and compare it with the version you downloaded. If the bar did not update, the most common causes are an incorrect file layout, a drive that is not FAT32, or a model mismatch.

If the soundbar does not recognize the drive, reformat it as FAT32 and try again with a different drive if possible. If the update starts but fails halfway, do not unplug the bar; some models recover by rebooting and prompt you to retry. If the bar becomes unresponsive after a failed update, contact the maker's support team for advice.

For related soundbar maintenance and troubleshooting, see our guides on factory resets, no sound troubleshooting, and subwoofer sync issues.

What to pick for your use

Questions

What USB drive format does a soundbar need for firmware updates?

Most soundbars require a USB drive formatted as FAT32. Drives of 32GB or smaller are recommended because some soundbars fail to detect larger drives. Always check the readme file that comes with the firmware for model-specific requirements.

How long does a USB firmware update take?

Most updates finish in two to five minutes. During the update, the soundbar typically displays a progress indicator or blinks an LED. Do not power off the bar or remove the drive until the update completes and the bar restarts.

Can a failed firmware update damage my soundbar?

A failed update can leave the soundbar in a non-functional state. Most modern bars recover on their own by rebooting and prompting a retry, but the safest approach is to follow instructions exactly and use the same model firmware. If the bar remains unresponsive, contact the maker's support.

Why does my soundbar not detect the USB drive?

Common causes include a drive formatted as NTFS or exFAT instead of FAT32, a drive larger than 32GB, files placed in a subfolder instead of the root, or an incorrect file set for your model. Reformat the drive and copy the files to the root, then try again.

Is updating firmware via USB the same as a factory reset?

No. A USB firmware update replaces the software and usually preserves user settings. A factory reset restores the soundbar to its original out-of-the-box state. After a reset, you may need to reinstall the latest firmware via USB to bring the bar back up to date.

Does updating firmware via USB improve sound quality?

Firmware updates primarily fix bugs, improve connectivity, and add or refine audio processing features. Some updates include adjustments to EQ presets or surround processing, which can affect perceived sound quality, but the core hardware capabilities do not change.