3. Uninstall everything from the 727 Captain family. (Start> Programs> Captain Sim> 727 Captain)

4. Make sure FSX / FSX-SE / Prepar3D is not runnung.

5. Double click the downloaded csp721_2500.exe file to install* the 2.5.

6. Install all Expansion models (if any) in any order.

7. Restart your computer.

* - The 2.5 will overwrite previously installed freeware liveries and/or other modifications of the original product. Prior to uninstall the product please backup all data added to the original product.