IMPORTANT: This file is only for use with the models identified. Not all models are sold in all countries.

This information is for the following models:

  • HT-NT3
  • HT-RT5
  • HT-ST9

About this download

Benefits and improvements

This utility updates the Sound Bar firmware to version M28.R.0476 and provides the following benefits:

Improvements over version M28.R.0475:

  • Improved TV connectivity

Benefits provided by previous updates and included in version M28.R.0476

System Requirements

Operating Systems

  • System Software

File Info

File Name


File Version

  • M28.R.0476

File Size

  • 196.45 MB

Release Date

  • 12-12-2017

Before You Start

Before You Start

  • Follow the update instructions carefully.
  • Your Sound Bar needs to be connected to a TV to install the update.
    • Don't operate, power off, or disconnect the Sound Bar from the AC power outlet until after the update is complete.
    • Failure to follow the instructions, or an interruption in the update process, can cause the Sound Bar to become unresponsive or to require repair.
  • Contact our Support team if you need assistance with the upgrade.

Download & Install

Installation Instructions

Determine if you need this update
Check the Firmware Version of the Sound Bar
Choose how to install this update
OPTION 1 - Update via Internet Method (Recommended)

The Update via Internet method is straightforward and the easiest way to update your Sound Bar. To use this method, your Sound Bar must be connected to a TV and the internet (512Kbps or faster). If you have a slower connection speed, use the USB Storage Device (USB) Update method instead.

Update via Internet Instructions
Troubleshooting for the Update via Internet
OPTION 2 - USB Storage Device (USB) Update Method

With this method, you use a computer to download the firmware upgrade to USB storage device, and then install it from the USB storage device onto your Sound Bar. You'll need a USB storage device with 150MB space available, and your Sound Bar has to be connected to a TV.

USB Storage Device (USB) Update Instructions
Troubleshooting for the USB Storage Device (USB) Update method