Texas Instruments TITANIUM TI-89 - Manual (Page 731)

Connectivity 731
Stopping the Program Stopping the Program Stopping the Program Stopping the Program
Because the Chat program sets up an infinite loop on both devices, press ´ (on both
devices) to break the program. If you press N to acknowledge the error message, the
program stops on the Program I/O screen. Press ‡ or N to return to the Home
screen.
Upgrading the Operating System (OS) Upgrading the Operating System (OS) Upgrading the Operating System (OS) Upgrading the Operating System (OS)
You can upgrade the OS on your TI-89 Titanium using your computer. You can also
transfer the OS from one unit to another identical model (for example, from a TI-89
Titanium to a TI-89 Titanium or from a Voyage™ 200 to a Voyage™ 200).
Installing OS software resets all device memory to the original factory settings. This
means that all user-defined variables (in both RAM and the user data archive), functions,
programs, lists, and folders (except the Main folder) will be deleted. It is possible that
Flash applications could also be deleted. You should use TI Connect software to back up
your data to your computer before installing a new OS on your calculator.
See the important information concerning batteries before performing an OS upgrade.
Important Operating System Download Information Important Operating System Download Information Important Operating System Download Information Important Operating System Download Information
New batteries should be installed before beginning an OS download.
If you are operating your TI-89 Titanium in a language other than English, you should
ensure that you have the most current localizer application installed when you upgrade
the OS software. If you do not have the most current localizer installed, prompts, error