FlashAir W-04 Software Update Tool



  1. Download FlashAir W-04 Software Update Tool (for Mac OS) "FlashAirFWUpdateToolV4_v40004_Km.zip".
  2. When using Safari, "FlashAirFWUpdateToolV4_v40004_K.app" appears automatically. Depending on your environment or setting, "FlashAirFWUpdateToolV4_v40004_K.app" may not appear. If "FlashAirFWUpdateToolV4_v40004_K.app" does not appear, double-click "FlashAirFWUpdateToolV4_v40004_Km.zip" to unzip it.
  3. Drag and drop the unzipped "FlashAirFWUpdateToolV4_v40004_K.app" onto the required installation folder (for example, "Applications" folder).


  1. Download FlashAir W-04 Software Update Tool (for Windows ) "FlashAirFWUpdateToolV4_v40004_Cw.zip".
  2. Right-click the downloaded "FlashAirFWUpdateToolV4_v40004_Cw.zip" and select "Extract All...". Select a destination to save the extracted folder and click "Extract".
  3. Double-click "FlashAirFWUpdateToolV4_v40004_C.exe" in the extracted folder and Installation Wizard will launch.
  4. Follow the instructions from Installation Wizard and install the Tool.
    • FlashAir Software Update Tool (for Windows ) requires Microsoft .NET Framework. If required version of .NET Framework is not installed on your computer, the message which asks its downloading and installation will be displayed. So please install the software update tool with your computer connected to the Internet. And if Windows on your computer is not up to date, the installation of .NET Framework might fail. Please update your Windows using Windows Update.
    • You need administrative privileges on your Microsoft Windows computer to use the FlashAir Software Update Tool.


  For Mac OS For Windows
Version V4.00.04
(File name: FlashAirFWUpdateToolV4_v40004_Km.zip)
(File name: FlashAirFWUpdateToolV4_v40004_Cw.zip)
Compatible Products FlashAir W-04 (16GB, 32GB, 64GB)
Release Date December 15, 2020 June 21, 2021
Supportted OS macOS 10.12, 10.13, 10.14, 10.15, 11 Windows 8.1,
Windows 10 Version 2004/20H2/21H1
Note Newer operating systems than the ones listed above will not be supported.
SD Card Slot Required.
(For PCs equipped with a self- made or modified SD card slot, we cannot ensure the performance.)
Manual User Manual User Manual
Download Download (ZIP: 2.7MB) Download (ZIP: 6.6MB)

Improvement History

Version Release Date Improvements
June 21, 2021
  • Support Windows 10 Version 21H1

December 15, 2020

  • Support macOS 11
December 15, 2020
  • Support Windows 10 Version 20H2
June 23, 2020
  • Support Windows 10 Version 2004
4.00.04 August 1, 2019
  • Bug fix
4.00.03 May 14, 2018
  • Stability improvements
4.00.02 December 18, 2017
  • A security vulnerability related to the generation and management of WPA2 key is modified
4.00.01 October 5, 2017
  • Bug fix