If you created the package with InstallShield that is a .MSI based installer and here's what you can try:http://www.advancedinstaller.com/user-g ... oduct.html
i've added the GUID from installshield version to upgrades page in advanced installer
You just need to add the Upgrade Code using the existing methods. If installed on this machine didn't work for you, you can try selecting the .MSI( extracting it if needed, if placed inside an .EXE bootstrapper ).
All the best,