Texas Instruments TI-Nspire Manual Book page 23

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Updating your handheld OS
Preparing to update
Warning: Updating the operating system will delete all TI-84
applications and files. Before installing an OS update, you should use
TI Connect to back up all TI-84 applications and files to a computer. You
can copy them back to the handheld when the OS update is complete.
If there is not enough room on the receiving handheld for the update,
the sending handheld is notified. The only time documents can be
affected by an OS installation is if the receiving handheld has a corrupted
OS. In this situation, documents may be affected by OS restoration. It is a
good practice to back up your important documents and folders before
installing an updated operating system.
See the important information below concerning batteries before
performing an OS update.
Important download information
You should always install new batteries before downloading a software
or OS update.
When in OS download mode, the Automatic Power Down™ (APD)
feature does not function. If you leave your handheld in download mode
for an extended time before you begin the downloading process, your
batteries may become depleted. You will then need to install new
batteries before downloading.
Downloading handheld OS updates automatically
Here are some important notes to remember about updating your OS:
Using the TI-Nspire™ Computer Link Software 19