Calculator User Manual
Connectivity  735
If You are Upgrading the Operating System on Multiple Units
If You are Upgrading the Operating System on Multiple UnitsIf You are Upgrading the Operating System on Multiple Units
If You are Upgrading the Operating System on Multiple Units
To perform an OS upgrade on multiple units, download and install the OS into one unit 
and then transfer the OS upgrade from one unit to another. This method is faster than 
installing it on each unit via a computer. OS upgrades are released free of charge and 
you do not need to obtain a certificate before you download or install them.
Error Messages
Error MessagesError Messages
Error Messages
Most error messages are displayed on the sending unit. Depending on when the error 
occurs during the transfer process, you may see an error message on the receiving unit.
Error Message Description
The sending and receiving units are not 
connected properly, or the receiving unit is not 
set up to receive.
The certificate on the receiving unit is not valid for 
the operating system (OS) or App on the sending 
unit. You must obtain and install a valid 
certificate. 
If the App no longer requires a certificate, you 
can download it again from 
the Texa s 
Instruments Web site at education.ti.com and 
then install the App again on your calculator.
An error occurred during the transfer. The current 
OS in the receiving unit is corrupted. You must 
reinstall the product software from a computer.










