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TI-Nspire Calculator

Operating System not found.

To fix this error message, you will need two pieces of software.

TI-Nspire Computer Link

TI-Nspire OS file (.tcc) for your calculator

  1. Install and open TI-Nspire Computer Link
  2. When the Select Handheld window appears, connect your Calculator to your computer with a USB cable.  If it doesn't show up in the list, hit Refresh.
  3. Select your calculator and click Select.
  4. Tools -> Install OS
  5. Navigate to your Downloads folder and select the TI-Nspire Operation System file (.tcc)
  6. The OS will now install.
Once the OS is done installing, your calculator will restart.  You can close TI-Nspire Computer Link and disconnect the USB cable.  Just go through the setup prompts on your calculator and you are done!