Texas Instruments PLUS TI-89 - Manual (Page 390)

Chapter 22: Linking and Upgrading 373
22LINK.DOC TI-89/TI-92 Plus: Linking and Upgrading (English) Susan Gullord Revised: 02/23/01 1:23 PM Printed: 02/23/01 2:20 PM Page 373 of 18
The term product software includes these two types of base code
upgrades:
¦ Maintenance upgrades (which are released free of charge).
¦ Feature upgrades (some of which are for purchase). Before
downloading a purchased feature upgrade from the Texas
Instruments web site, you must provide your calculator’s
electronic ID number. This information is used to create a
customized electronic certificate that specifies which product
software your unit is licensed to run.
Installing either a maintenance upgrade or a feature upgrade resets
all calculator memory to the original factory settings. This means
that all user-defined variables, programs, lists, and Flash applications
will be deleted. See the important information concerning batteries
(below) and “Backing Up Your Unit Before a Product Software (Base
Code) Installation” on page 374 before performing a base code
(maintenance or feature) upgrade.
New batteries should be installed before beginning a base code
(maintenance or feature upgrade) download.
When in base code download mode, the Automatic Power Down é
(APD é) feature does not function. If you leave your calculator in
download mode for an extended time before you actually start the
downloading process, your batteries may become depleted. You will
then need to replace the depleted batteries with new batteries before
downloading.
You can also transfer base code from calculator-to-calculator using a
unit-to-unit cable. If you accidentally interrupt the transfer before it
is complete, you will need to reinstall the base code via a computer.
Again, remember to install new batteries before downloading.
Please contact Texas Instruments as described in Appendix C if you
experience a problem.
Upgrading Product Software (Base Code)
You can upgrade the product software (base code) on your
TI - 89 / TI - 92 Plus . You can also transfer product software (base
code) from one TI - 89 or TI - 92 Plus to another, provided that the
receiving unit has the correct certification that allows it to run
that software.
Product Software
(Base Code)
Upgrades
Important Product
Software (Base
Code) Download
Information