DownloadFullInstaller Save

macOS application written in SwiftUI that downloads installer pkgs for the Install macOS Big Sur application.

Project README

Download Full Installer

   

This is a Swift UI implementation of my fetch-installer-pkg script. It will list the full macOS Big Sur (and later) installer pkgs available for download in Apple's software update catalogs.

You can then choose to download one of them.

Motivation

You may want to download the installer pkg instead of the installer application directly, because you want to re-deploy the installer application with a management system, such as Jamf.

Since the Big Sur macOS installer application contains a single file larger than 8GB, normal packaging tools will fail. I have described the problem and some solutions in detail in this blog post.

Extras

  • Copy the download URL for a given installer pkg from the context menu.

  • Change the seed program in the Preferences window.

Questions

Is this different than the fetch-installer-pkg script?

Not really, other than it is a UI app and written in Swift and SwiftUI instead of a command line script written in python. I used this as a project to learn more about SwiftUI.

Can this download older versions of the macOS installer application?

No. Apple only provides installer pkgs for Big Sur and later. Earlier versions of the Big Sur installer are removed regularly.

Will you update this so it can download older versions?

No.

How is this different than softwareupdate or installinstallmacOS.py

As far as I can tell, this downloads the same pkg as softwareupdate --fetch-full-installer and installinstallmacOS.py.

The difference is that the other tools then immediately perform the installation so that you get the installer application in the /Applications folder. This tool just downloads the pkg, so you can use it in your management system, archive the installer pkg, or manually run the installation.

Credit

Both fetch-installer-pkg and this application are based on Greg Neagle's installinstallmacos.py script.

Open Source Agenda is not affiliated with "DownloadFullInstaller" Project. README Source: scriptingosx/DownloadFullInstaller
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