Applicable Model

This information is for the following model(s):

  • HT-AX7

About This Download

Benefits and Improvements

  • Improves the security of communication

System Requirements

  • An Android device running Android 8.0 or later, or an iPhone/iPad running iOS 15.0 or later.
  • An active internet connection.
  • The latest version of the Sony | BRAVIA Connect application (Ver. 3.1.0 or later) must be installed.
  • The speaker must be connected to your Android device or iPhone/iPad.

File Info

  • Name: Firmware update 4800 for HT-AX7
  • Version: 4800
  • Size: 32.8 MB (34 411 751 bytes)
  • Release Date: 11-06-2026

Preparation

Check the Firmware Version

If the firmware version is 4800, you do NOT need to perform the update.
To check which firmware version you have, follow the steps below:

  1. Turn on the HT-AX7 Portable Theater System.
  2. Launch the Sony | BRAVIA Connect app on your Android device or iPhone/iPad.
  3. Connect the HT-AX7 to the Sony | BRAVIA Connect app.
  4. Select Settings from the menu in the Sony | BRAVIA Connect app.
  5. In the Settings menu, select System Settings.
    System Settings is located in the second row from the top.
  6. In the System Settings menu, select System Information.
    System Information is located at the bottom.
  7. Confirm the firmware version of the main unit is 4800.
    Software Version is displayed in the System Information screen.

Important Notice

  • Do NOT turn off the speaker system or tap the (power button) in the Sony | BRAVIA Connect app menu during the firmware update.
  • Do NOT perform the update in a location where the Wi-Fi signal is unstable or may become congested.
    Note: The communication distance between the speaker system and the wireless LAN router may be reduced depending on the usage environment, including the wall material, radio wave reception conditions, or obstacles between the two devices, Move the speaker system and wireless LAN router closer to each other.

Before You Upgrade

  • Once the firmware is updated, you cannot return to an earlier version.
  • The update takes approximately 30 minutes to complete.
  • The update may take longer depending on your device and the radio wave environment.

Download & Install

Step 1: Install the Update

  1. Turn on the HT-AX7 Portable Theater System.
  2. Launch the Sony | BRAVIA Connect app on your Android device or iPhone/iPad.
  3. Connect the HT-AX7 to the Sony | BRAVIA Connect app.
  4. Select Settings from the menu in the Sony | BRAVIA Connect app.
  5. Select Confirm to start the update process.
    Note: If an update is available, the message “Latest version of the software is available. Let's perform the update.” will be displayed.
  6. In the Settings menu, select Software update.
    Software update is located in the 3rd row from the top.
  7. Confirm that the software update screen shows Version 4800 and review the update details Then, select Update.
    At the bottom of the screen, the [Update] and [Close] buttons are lined up one above the other. The [Update] button is at the top.
  8. The software update progress is displayed.
  9. Confirm the software update is completed.
    [Update complete] will be displayed on the screen, and [Done] will be displayed at the bottom of the screen.

Step 2: Check That the Update Was Successful

After the software update is completed, confirm that the new version has been installed successfully by following the steps in the Check the Firmware Version section. If the firmware version shown is 4800, the firmware update was successful.

Sony SupportHT-AX7

Firmware Update to Version 4800