TI-83 Plus family Operating System v 1.19

Features Summary
This operating system (OS) version is a recommended update for all units of the TI-83 Plus Family. It increases stability when operating your graphing calculator in conjunction with desktop applications including TI Connect™ and TI-Navigator™. In addition, it ensures uniform display contrast among all units.
Steps to check your OS version:
  1. Press 2nd Mem on your TI-83 Plus, or TI-83 Plus Silver Edition
  2. Select 1:About
  3. Press Enter
  4. You should see TI-83 Plus 1.19

*Before you begin to install any new Apps or update your OS, be sure you have a new set of batteries in your TI calculator for optimum performance.