To resolve this message, please reinstall the operating system using the below steps:

The operating system can be downloaded from the respective links below. Please choose the right link according to yourTI-Nspire™ CX handheld.

• Download OS for TI-Nspire™ CX here.
• Download OS for TI-Nspire™ CX CAS here.

Please note that the downloaded file cannot be opened with the computer and needs to be installed on your handheld. If you will be prompted for an account log in or registration during the download process, please select “continue as Guest” or log into your account to proceed.

To transfer the operating system to your handheld, you still need the respective connectivity software installed on your computer. This will enable the communication between the handheld and your computer. This is either the licensed TI-Nspire™ CX/CX CAS Student/Teacher Software or the non-licensed TI-Nspire™ Computer Link software. Please note, the licensed software TI-Nspire™ CX/CX CAS for students or teachers is included when purchasing aTI-Nspire™ CX handheld.

You can download TI-Nspire™ Computer Link here.

Once the connectivity software is installed, you can connect your handheld to the computer with the USB to mini-USB cable and transfer the operating system by dragging the operating system file onto the connected handheld within the software.

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