What is this for?
If you use the Auto Dark Mode Beta and are trying to update from 10.4 onwards to 11 you can use this installer to migrate the update system.
This is necessary due to changes in file structure that will break existing installations via Inno Setup.
After running the migration installer, updates can be performed automatically again.
Installing this will yield Build 11.0.0.5
If you want to make use of the latest feature, you'll have to check for updates again within the ADM App.