TI-Nspire™ CX CAS Handheld, Download and Install your OS
Download TI-Nspire™ CX CAS OS version 4.5 and update your handheld using TI-Nspire™ CX Software. To load OS version 4.5, you will need 15 MB free space on your handheld. (Note: Once you have upgraded to version 4.5 you are unable to load previous versions of the TI-Nspire™ CX CAS OS). Detailed instructions are available in TI Knowledge Base Solution #21390.