Software tool for GU-3000,GU-3900B and GU-D series [GU TOOL BOX]


Latest version

GU TOOL BOX Ver (2020/07/07)


Major changes and downloads of past versions

  • 2020/07/07

    ・Added GT-CP tab (Settings, Memory Switch, Macro, Information)
    ・Bug fix
    ・Code signing update

  • 2015/08/19

    Speed up Macro Erase.

Read and Change settings GU display module

This tool reads flash memory and settings that pertain to memory switches or image/macro flash memory. Additionally, this program can reset all settings to their factory default conditions and erase image/macro data from flash memory. This program does not require an install but it does need .NET framework version 4.0 or 4.5 to be installed.

Screen Snapshots


How to start

  • Unzip file onto your Desktop or MyDocuments.
    Open the folder and double click on "GuToolBox.exe"
  • If you are running a Japanese OS, a dialog box will ask if the program should start with the Japanese language. Please choose your language.
  • When the application is initially launched, a quick start guide will appear. If you do not want to see this guide during program start, un-check the "Show this Guide at Start up" check box.
  • The program will start on the "Settings" tab.
  • Please connect the display module to the PC and power it on.
    Then select the COM port number for the display.
  • Set the display part number or use the "Auto Detect" button to automatically fill in the display module's information.
  • The "Settings" tab also includes buttons to test basic display functions.
  • Now you can navigate to any tab that you need to use.


  • Applicable Display model:
    Noritake VFD Module GU-3100, GU-3900, GU-3900B, GU-B GU-D Series
  • Tested Operating Systems: Windows XP, 7, and 8.1 (.NET Framework 4.0 or 4.5 required)


  • This tool is supplied "As it is" without any warranty.
  • It's possible to fail or malfunction under a specific combination of peripherals and PC or operating system.

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