How to detect if a Suite is running in upgrade mode?

[#1]

IsInstallMode will help detect a suite installer running in maintenance mode - however it can not be used to detect an upgrade.

To detect a suite upgrade the "Suite Installed" condition must be used. Alternatively to identify if a particular package in the suite was upgrading an "MSI Upgrade" condition would work for an MSI package, otherwise a "Registry Comparison' condition could be used to detect a none windows installer package.

More details on suite conditions can be found here:
http://helpnet.flexerasoftware.com/installshield23helplib/installshield23helplib.htm#helplibrary/SteConditionCheckTypes.htm

http://helpnet.flexerasoftware.com/installshield23helplib/installshield23helplib.htm#helplibrary/SteConditionCheckTypes.htm