Configuring Updater for Software Version Downgrades

[Splinti]

Hello,

I am currently using a software that has the capability to switch between different versions. For my specific use case, I need the software updater to automatically “update” to a lesser version (for example, from Version 1.1 to 1.0).

However, I have not found any configuration settings that would allow me to enable this functionality.

Edit: Using a .msi installer would be preferred due to compatibility reasons.

Is it possible to configure the updater to allow such downgrades? Any guidance or suggestions would be greatly appreciated.

Thank you!

[Catalin]

Hello and welcome to our forums,

Normally, Windows Installer does not allow the downgrade scenario.

However, at our user's request, we have implemented the option to allow a downgrade. You can set this in the "Upgrades" page of your Advanced Installer project.

However, I'm afraid this might not work with the updater.

Best regards,
Catalin

[Splinti]

Hi,

thanks for your response!

I was able to find a solution using a custom EXE as detection method.
It seems to work almost fine, but I have one problem that I would need help with.

When the updater starts the installation of the "newer" version, my custom actions don't get executed for some reason.
I would need a custom action to execute a script, even when it's not a first-time-install.
How can I add a custom action in my installer that also runs on update?

Thanks for your help!

Best regards
Splinti

[Catalin]

Hello Splinti,

Thank you for your followup on this and for sharing your solution with us!

How can I add a custom action in my installer that also runs on update?

In the Custom Actions page --> your custom action, we should make sure that under "Execution Stage Conditions" --> "Show upgrade options", the "Upgrade" option is selected.

Hope this helps!

Best regards,
Catalin