Texas Instruments Titanium TI-89, User Manual

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Connectivity 712
If you accidentally interrupt the transfer before it is complete, you will need to reinstall the
OS. Again, remember to install new batteries before downloading.
Backing Up Your Unit Before an Operating System Installation
When you install an OS upgrade, the installation process:
• Deletes all user-defined variables (in both RAM and the user data archive),
functions, programs, and folders.
• Could delete all Flash applications.
• Resets all system variables and modes to their original factory settings. This is
equivalent to using the
MEMORY
screen to reset all memory.
To retain any existing variables or Flash applications, do the following before installing
the upgrade:
•
Important:
Install new batteries.
• Transmit the variables or Flash applications to another device.
– or –
• Use a USB cable or TI Connectivity Cable USB and TI Connect™ software
(
education.ti.com/downloadticonnect ) to send the variables and/or Flash
applications to a computer.
Where to Get Operating System Upgrades
For up-to-date information about available OS upgrades, check the Texas Instruments
Web site at
education.ti.com/downloadticonnect .