MSIProductVersion–
Specify a product version number for the MSI database
This option has an effect only when generation of a Windows
Installer database is requested via the MSIFilename option.
The product version number will be displayed when you show the
properties of the database. When deploying to a machine that
already has the package installed, Windows Installer will check the
version numbers and will refuse to install an older version over a
newer version, you'll have to manually uninstall the old version
first.
This creates a .msi file with a specific product version
[BuildOptions]
MSIFilename=mymsi.msi
MSIProductVersion=1.0
Availability: This option requires Thinstall version
3.210 or higher