Applicable Models

This information is for the following models:

  • NW-WS623
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 Digital Music Player is disabled after making a Bluetooth connection to a device with iOS 13

Previous Benefits and Improvements

  • Resolve the symptom of “No Data” or “Data Error” being heard and playback is not available
  • Resolve other issues

System Requirements

Operating Systems

The latest version of the firmware update is compatible with most commonly used versions of Mac OS:
IMPORTANT: Not supported by OSs other than specified below.

  • macOS 10.13-10.15

File Info

File Name

  • Firmware Update version 1.02 for NW-WS620 Series (Mac)

File Version

  • Version 1.02

File Size

  • 47.6 MB (49,958,581 byte)

Release Date

  • 06-08-2020


Check the firmware version

Do I need to download it? This update is not necessary if your Walkman have already been updated to firmware version 1.02 by the automatic firmware update function.
If you're not sure, it's easy to check which version of firmware you have:

  1. Connect your Walkman to your computer via USB*.
  2. On your computer, check the "information.txt" file in the root folder.
  3. The "information.txt" file contains the following information:
    • 01: Model series name
    • 02: System software version
    Confirm the model number and firmware version.

Soon after the software update, information about the previous version before the update is shown in the "information.txt". To get the latest version information, remove your Walkman from the cradle and reattach it again.

*Attach the USB cable (supplied) to the USB cradle (supplied). Then, attach your Walkman to the USB cradle.

Before you upgrade

  • After updating, the firmware cannot be reverted to an earlier version.
  • Please transfer all data from the unit to the computer. Data that remains on the unit may be lost when upgrading.
    We cannot guarantee that tracks and data will not be damaged or deleted when performing this update.
  • When upgrading, the unit needs to have around 80 MB of free space. Please check that there is sufficient free space.
  • If there is not enough free space in the built-in flash memory, transfer any unnecessary data back to the computer to increase free space.
  • When installing this file, make sure that you are logged in as the Administrator or as a user with administrative rights.

Download & Install

Note: The NW-WS620 Series firmware update is only possible via PC.

Step 1: Install the update

  1. Read and agree to the terms and conditions.
  2. Download the file to your computer.
  3. Once the download is complete, connect your Walkman to your PC via USB.
  4. Close all software running on your computer.
  5. Double-click the saved file and follow the on-screen instructions.
    While the system software is updating, note the following.
    • Do not remove the USB cable from either the PC or the USB cradle.
    • Do not remove your Walkman from the USB cradle.
    Note for macOS 10.15 users:
    The first time that the update tool is started up in macOS 10.15, a dialogue window that reads, ["Software Update Tool" would like to access files on a removable volume.] will appear. If you click [OK], the update will start. If you click [Don't Allow], an error message will appear and the update will fail.
  6. When the message indicating that the upgrade is complete displays, click [Finish].

Step 2: Check the update was successful

After the update, please 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 "1.02", the upgrade was successful.