About this download

Benefits and Improvements

• Supports the IMAX Enhanced feature. This function can be used by connecting the HT-A9M2 to an optional speaker (subwoofer) that supports this home theatre system
  Note: Combination examples: HT-A9M2 and SA-SW5, etc.
• Improves other minor features

Previous Benefits and Improvements

The following benefits and improvements are also included in this update.

• Improves the Acoustic Center Sync feature
• Supports the Voice Zoom 3 feature
• Other minor feature improvements

System Requirements

• An Android device (Android 8.0 or later) or an iPhone (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 control box must be connected to your Android device or iPhone.
• Each speaker must be connected to the control box.

File Info

• Name: Firmware update 1.256
• Version for the control box: 1.256
• Version for the supplied front/rear speakers: 3.042
• Size: 274 MB (288 209 529 bytes)
• Release Date: 09-11-2024

Preparation

Check the firmware version

If the firmware version for the control box is 1.256, you do NOT need to perform the update.
To check which firmware version you have, follow the steps below:

1. Turn on the control box.
2. Launch the Sony | BRAVIA Connect app.
3. Connect the control box to the Sony | BRAVIA Connect app.
4. Connect each speaker to the control box.
5. Select Settings in the remote menu.
   
6. In the Settings menu, select System Settings.
   
7. In the System Settings menu, select System Information.
   
8. Confirm the firmware version. (Ignore the 00 before the version number.)
   

Important Notice

• Do NOT turn off the control box or tap the (power button) in the remote menu during the firmware update.
• Do NOT perform the update in a location where the Wi-Fi signal is inconsistent or can become congested.
  Note: The communication distance between the speaker system and wireless LAN router may be shortened depending on the usage environment (including the wall material), radio wave reception conditions, or obstacles between the two devices. We recommend you move the speaker system and wireless LAN router closer to each other.

Before you upgrade

• Once the firmware is updated, it’s not possible to return to an earlier version.
• The update process will take approximately 30 minutes to complete.
• The update process may take longer to complete depending on your device and the radio wave environment.

Download & Install

Step 1: Install the update

1. Turn on the control box.
2. Launch the Sony | BRAVIA Connect app.
3. Connect the control box to the Sony | BRAVIA Connect app.
4. Connect each speaker to the control box.
5. Select Settings in the remote menu.
   
   Note: If an update is available, the message You can update to the latest software. will be displayed. Press Confirm to begin the update process.
   
6. In the Settings menu, select Software update.
   
7. Confirm the software update information, then press Update.
   
8. The update progress bar will be displayed.
   
9. Confirm that the software update is completed.
   

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 1.256 for the control box (3.042 for the supplied front/rear speakers), the firmware update was successful.