fx-CG100 OS update - Casio Calculators

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fx-CG100 OS updates

We are please to introduce a new OS update for the fx-CG100 graphic calculator. Are you ready to update your calculator to 2.1? Please follow these steps.

Step-by-Step Update Guide Discover the fx-CG100

Casio fx-CG100 graphic calculator in the classroom

Key Updates

1. Linear template for linear implicit functions of the form ax + by + c = 0.

2. Modify mode improvements: Added Zoom (+/- keys) and options in tools.

3. Equation App: For Quadratics the Discriminant (d) is also displayed

4. E-CON5 app is installed

5. CSV: Import Sub Name

6 Automatic Parenthesis when using the Scientific key (in line with the CW+ Models)

7. Screen Receiver has been enabled, this can be downloaded and installed from here https://edu.casio.com/forteachers/er/software/

Important Pre-Update Notes

• Updating the OS deletes all data in the calculator’s Main Memory.
• Cable Requirement: The fx-CG100 uses a USB-C cable. Ensure you use a high-quality cable capable of data transfer
• Battery Power: Ensure your batteries are fresh.
• Only 1 calculator per device can be updated at a time
• Refrain from using the devices whilst the update is taking place.

Step-by-Step Update Guide

1. Download the Update Software

This file can be downloaded here.

Download file

2. Prepare the Computer

• Close all other applications to prevent any interference with the USB connection.
• Run the update file
• Crucial: Do not connect your calculator to the PC yet. Wait until the software explicitly asks you to.

3. Prepare and connect the Calculator

• Turn the calculator OFF.
• Plug the USB-C cable into your calculator and then into a direct USB port on your computer (avoid using USB hubs).
• If the calculator asks for a “Connection Mode,” select OS Update
• The screen should say “Receiving…”

Casio fx-CG100 colour graphic calculator

4. Connect and Execute

• On your computer screen, click Next or OK in the update software.
• The update will begin. You will see a progress bar on your computer and an “Updating…” message on the calculator. Do not touch the cable or the calculator during this time.
• This process can take between 10-15 minutes

5. Finalise the Update

• Once the computer displays “Update Complete,” you can safely disconnect the cable.
• The calculator will likely restart automatically. You may need to go through the initial setup again (Language, Battery Type, etc.).

Troubleshooting:
“Update Failed” and “OS ERROR”

If the cable is accidentally unplugged or the update fails, you may see an OS ERROR or a similar message:
• Don’t panic; this is a recovery mode.
• Press the RESTART button on the back of the calculator
• Unplug the calculator and restart the update software on your computer. It should detect the calculator in recovery mode and allow you to re-run the installation.

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Supported pricing for UK schools

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May 2026

fx-CG100 OS updates

Key Updates

Important Pre-Update Notes