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-CT790
  • HT-NT5

About this download

Benefits and improvements

This utility installs version M34.R.2137 of the Sound Bar Firmware software and provides the following changes and benefits:

Improvements over version M34.R.2135:

  • Improved TV connectivity

Benefits provided by previous updates and included in version M34.R.2137

System Requirements

Operating Systems

  • System Software

File Info

File Name


File Version

  • M34.R.2137

File Size

  • 212.34 MB

Release Date

  • 11-30-2017

Before You Start

Determine if you need this update

  1. Turn on the TV and make sure it's tuned to the inputs to which the Sound Bar is connected.
  2. Turn on the Sound Bar.
  3. Using the remote control, press the HOME button.
  4. Use the arrow keys Arrows on the remote control to select Setup, System Settings, System Information, and then press the ENTER Enter button button.
  5. The firmware version currently installed on the Sound Bar will be listed on the TV screen.
    Firmware Version
    • If the last four digits of the version number are 2137 or higher, you don't need this update.
    • If the last four digits are lower than 2137, you should install this update.

Antes de começar

  • Siga atentamente as instruções de atualização.
  • 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 system 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 system. To use this method, your Sound Bar must be connected to your internet source using an Ethernet cable. (512Kbps or faster). If you have a slower connection speed, use the USB Storage Device method instead.

Read the Update via internet Instructions
Troubleshooting for the Update via internet
OPTION 2 - USB Storage Device Update Method

With this method, you use a PC 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.

Read the USB Instructions
Troubleshooting for the USB Update