Education Technology

Software, OS updates and apps

TI-73 Explorer™ Operating System

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This operating system (OS) update provides calculator compatibility with TI Connect™ Software. TI Connect™ for Windows® or TI Connect™ for Macintosh® is required to install this update.

Read the License before continuing. By downloading the application you indicate your agreement with the terms and conditions of the License.

Download Item Version Size (KB)
TI-73 Explorer Operating System 1.91 539

Features Summary

This operating system (OS) update provides:

  • Calculator compatibility with TI Connect™ Software

Installation of this version is highly recommended before installing any new Calculator Software Applications (Apps).


Steps to check your OS version:

  1. Press 2nd Mem on your TI-73 Explorer™
  2. Select 1:About
  3. Press Enter
  4. You should see Graph Explorer Software 1.91

*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.