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-CT800
  • HT-MT500

About this download

Benefits and improvements

This utility installs version M39.R.0377 of the Sound Bar Firmware software and provides the following changes and benefits:

Improvements over version M39.R.0376:

  • Improved TV connectivity

Benefits provided by previous updates and included in version M39.R.0377

System Requirements

Operating Systems

  • System Software

File Info

File Name


File Version

  • M39.R.0377

File Size

  • 216.62 MB

Release Date

  • 11-30-2017

Before You Start

Determine if you need this update

  1. Turn on the television and make sure it is tuned to the inputs to which the Sound Bar is connected.
  2. Turn on the Sound Bar.
  3. Use the arrow buttons Arrows on the remote control to select Setup, System Settings, and then press the ENTER Enter button button.
  4. Use the arrow buttons on the remote control to select System Information, and then press the ENTER button.
  5. The firmware version currently installed on the Sound Bar will be listed on the television screen.
    Firmware Version
    Note: If the last four digits of the version number are 0377 or higher, it is not necessary to install this firmware update.

Before You Start

  • Follow the update instructions carefully.
  • Your Sound Bar needs to be connected to a TV to install the update.
    • Do not 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, may cause the player to become unresponsive or to require repair.
  • Contact our Support team if you need assistance with the upgrade.

Download & Install

Installation Instructions

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 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 Update