Sony SupportWH-CH700N

Firmware Update to Version 4.5.2

Enhances the security features of the system software

    Applicable Models
    About this download
    System Requirements
    File Info
    Preparation
    Download and Install
    Questions and Answers

    Applicable Models

    This information is for the following models:

    • WH-H900N
    • WH-CH700N
    • WI-SP600N
    • WI-C600N

    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

    • Enhances the security features of the system software
    • Improves general performance of the headphones

    Previous Benefits and Improvements

    • Adds support for Amazon Alexa
    • Adds support for the Voice Guidance language selection feature (WI-C600N only)

    Note: In order to use Amazon Alexa or the Voice Guidance language selection feature (WI-C600N only), the Sony|Headphones Connect application, version 5.0.0 or later, will need to be installed.

    • Optimizes the headphones for Google Assistant (Except for WI-C600N)

    IMPORTANT: Installing this firmware will only make your headphones compatible with the Google Assistant.

    NOTES:

    • The Google Assistant was activated by Google in 2018. The activation date might vary, depending on your country.
    • Google and Android are trademarks of Google LLC.

    System Requirements

    • An Android device (V5.0 or later) or an iOS device (iOS 11.0 or later)
    • An active Internet connection
    • The latest version of the "Sony|Headphones Connect" application must be installed
    • The headphones must be connected to your Android or iOS device

    File Info

    File Name

    • Firmware update 4.5.2 for WH-H900N / WH-CH700N / WI-SP600N / WI-C600N

    File Version

    • Version 4.5.2

    Release Date

    • 06-02-2020

    Before You Start

    Check the firmware version

    If the firmware is version "4.5.2" or above, you do not need to perform the update. If you're not sure, it's easy to check which version of firmware you have:

    1. Launch the "Sony|Headphones Connect" application.
    2. Connect your headphones to the "Sony|Headphones Connect" application.
    3. Tap the three dots (menu button) in the upper right corner.

      NOTE: The device displayed on the screen is depending on the connected device.
    4. Select the Version of your device shown in the Menu. This item is shown only when the device is connected.
    5. Confirm the firmware version.

    Important notice

    Do not charge the battery or turn off your headphones while downloading updates, transferring data, or updating. Doing so may cause the headphones to become unusable.

    Do not perform the update in a location where the Wi-Fi signal is inconsistent, such as on a train, in a place where Wi-Fi signals become congested, or near a microwave, cordless phone, or any other devices that use the 2.4 GHz band frequency radio waves.

    Make sure both devices (Android/iOS device and the headphones) are fully charged.

    Disconnect all other Bluetooth devices such as wearable devices or smart watches from your Android/iOS device before starting the update.

    Before you upgrade

    • Once updated, the firmware cannot be reverted to an earlier version.
    • The update process will take approximately 60 minutes to complete. The file size is as follows.
      • about 3.3 MB (WH-H900N)
      • about 3.1 MB (WH-CH700N)
      • about 2.1 MB (WI-SP600N)
      • about 2.8 MB (WI-C600N)
    • For iOS devices, make sure to turn off the "Google Assistant" function prior to the update.
    • Depending on the radio wave environment and your Android/iOS device, it may take longer to complete.

    Download & Install

    To update the headphones, follow the procedure below:

    1. Download data from the server to the iOS device or the Android device.
    2. Transfer data from the iOS device or the Android device to the headphones.
    3. Execute update with the headphones.

    Step 1: Install the update

    1. Launch the "Sony|Headphones Connect" application.
    2. Connect your headphones to the "Sony|Headphones Connect" application.
      • If you have never connected to the "Sony|Headphones Connect" application before, follow the instructions on the screen to connect the headphones to your Android device.
      • If you have connected to the "Sony|Headphones Connect" application before, select your headphones.
    3. The following screen will be shown when the connection has been established.
    4. If an update is applicable, "Headphone update available" will be displayed, and you can press "More Info".
    5. Verify that "Version 4.5.2" is displayed and press "OK" to start the update.
    6. Once the download starts, it will automatically move to the next screen after the download is completed.
      NOTE: When the message [Bluetooth Pairing Request] is displayed, press "Pair". The update will resume. (Only for iOS devices.)
    7. The transfer starts. It will automatically move to the next screen after the download has been completed.
    8. Once the transfer starts, it will automatically move to the next screen after the transfer has been completed. This will take approximately one minute.
      NOTE: Do not charge the battery or turn off your headphones while downloading updates, transferring data, or updating. Doing so may cause the headphones to become unusable. If a disconnection message is displayed, wait until it automatically reconnects.
    9. When the software update is completed, press "OK". If the screen is not displayed, check whether the version has been upgraded in the following step.

    Step 2: Check the update was successful

    • After the update, 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 "4.5.2", the upgrade was successful.

    Questions & Answers

    An update error message appears.

    1. Press "OK".
    2. Turn the power off then on to restart the headphones.
    3. After that, restart "Sony|Headphones Connect" and update again

    Even though the update failed during the process, check the firmware version. If the Version is shown as 4.5.2, the firmware update was successful. If not, try the firmware update again. You can check the Version from the setting in the "Sony|Headphones Connect" application. To find out how to check the version, go to the "Check the firmware version" on this page.

    Related information can be found on the Sony Support page.