With very little effort, you can now upgrade your devices to Mojave using this recipe.
Devices running earlier versions (pre 10.8 Mountain Lion) will require updating twice; first to a Mountain Lion and then to Mojave for example.
Associate Fileset as a Kiosk association for the end users to install in their own time.
You will need to replace the .fwplaceholder in the /Applications folder with the Install macOS Mojave.app
5. Associate to test machines
6. Once tested, deploy to your clients
This Fileset adds a file to prevent re-running the Fileset. If the Fileset requires re-running, this file will need to be removed in advance:
If you are having issues with devices updating check out:
kbsurveyThis method has now been replaced with: macOS Upgrades or Erasing