Applicable Models

This information is for the following models:

  • SRS-XB402M

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

About this download

Benefits and Improvements

  • Fixes an issue where the speakers cannot be paired on a smartphone or other device
  • Improves general functions

Previous Benefits and Improvements

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

  • Improves network access and stability

File Info

File Name

  • Firmware update 20306044 for SRS-XB402M

File Version

  • 20306044

Release Date

  • 17-11-2020


Check the firmware version

If the version is displayed as "17150040" or lower, we strongly recommend updating the firmware.
If you're not sure, it's easy to check which version of firmware you have:

  1. Connect the unit to the same Wi-Fi network as your smartphone using the "Music Center" application.
  2. Start up the "Music Center" application on your smartphone.
  3. Select the SRS-XB402M, click the device icon.
  4. Click the Settings menu.
  5. Click the System menu.
  6. The system firmware version will appear in the SRS-XB402M Version menu.

The software update of this product will be automatically updated to the latest software version while connected to the Internet via a Wi-Fi network. The software update will be delivered from time to time when a new feature becomes available or the update is required for stable use.

Important notice

  • You cannot disable the automatic software update.
  • Previous versions of the software cannot be retrieved.
  • Software updates are available when the speaker is in the following states.
    • The speaker is connected to the Internet via a Wi-Fi network.
    • The speaker is connected to the AC outlet via the supplied AC adapter and the remaining power of the built-in battery is 20% or more.
  • During the update, the Status Indicators will blink and light up.
  • Do not power off the product while updating. The product may not be operational while updating.
  • A Wi-Fi connection is required to use this product.
  • By using this product, agreement to Sony's EULA is necessary.
  • Software for this product is automatically updated from time to time and you cannot choose or refuse to download this automatically updated software.