Download the update installation file. Click here to download the update installation file. A window will open asking what you want to do with a file called 'Update.exe'. Click 'Run' button. A second window might open and ask if you are sure you want to run this software. Click 'Run' again. Follow the Setup Wizard. Once the download has finished, a dialog box will open and ask if you want to upgrade the Package Modeling software. Click the 'Yes' button. The Package Modeling InstallShield Wizard will open and guide you through the rest of the upgrade process. Launch Wal-Mart Stores, Inc. Package Modeling After updating Package Modeling, open the software by clicking the Package Modeling icon on your Desktop or Start Menu.