NWZ-A726/A728/A729 Firmware Update Program Download Service

Please follow the steps below to download the program.

1. Create a folder named "FWUP" on the C drive of your computer to store the downloaded file.
2. Before downloading accept the terms and conditions at the end of this page.
3. Download the following file in the folder created in Step1:
   NWZ-A720series_V1_03.exe (16,829 KB)
4. After the download is completed, check that the file is correct open Windows Explorer and make sure that the file size is 16,829KB. If the file size is different, download the file again.

Update procedure

Once the download is finished, follow the steps below to update the program.

Note:

To perform this update, the WALKMAN needs to have at least 25MB free space
We strongly recommend that you first back up all the data (music and files) contained in your WALKMAN to your computer before proceeding with the update.

1. Connect the WALKMAN to the PC.
2. Close all running programs in Windows.
   In case Content Transfer starts automatically, close it and close all other running programs in Windows.
3. Browse to the update file located in the FWUP folder on the C drive of your computer. Double-click the NWZ-A720series_V1_V02.exe file. The update program will now start.
4. Follow the on-screen instructions and make sure that the WALKMAN is not disconnected from the computer before the update is complete, although USB disconnection messages may sometimes appear on your computer.
5. At the end of the update process, the message that the update is complete appears. Click Finish . Your WALKMAN is now updated.

Errors that may occur during the update process

• In case the PC shows the following message: "The update data file cannot be transferred because there is not enough available disk space in the device."
  
  
  
  Delete some songs or files contained in the WALKMAN, or transfer them to the PC in order to have at least 25MB free space in the WALKMAN.
• In case the PC shows the following message: "The software update of the NWZ-A726 (or NWZ-A728, NWZ-A729) device to version 1.03 timed out."
  
  
  
  The update may have failed. Click Finish. Follow the Update procedure and try to update again.

When the update is complete

Make sure that your WALKMAN is correctly updated by checking the firmware version:

1. Press and hold the BACK/HOME button until the Home menu appears.
2. Pressbutton to select(Settings), and then press button.
3. Pressbutton to select Common Settings, and then press button.
4. Pressbutton to select Unit Information, and then press button.
   Confirm the Model and the Firmware version.