- Download Macos Sierra Installer App
- Download Macos High Sierra
- Download Macos High Sierra Installer App
On September 20, 2016, Apple announced that macOS Sierra, the latest major release of the world’s most advanced desktop operating system, is now available as a free update. MacOS Sierra brings Siri to the Mac with intelligent and helpful features users know and love from the iPhone and iPad, along with all-new capabilities designed specifically for use on the desktop. Get the macOS High Sierra installer software You’ll find High Sierra in the App Store. It’s not available as an update, so if you run Software Update (Apple menu About This Mac Software.
Most of the time, you can re-download the current version of macOS via the Mac App Store, and older ones via these links:
However, I’ve run into a situation several times where the Software Update mechanism simply refuses to initiate a download:
Thankfully, macOS installers can be downloaded via Terminal in macOS Catalina. This command will download the most recent version of macOS, depositing it in your Applications folder:
softwareupdate --fetch-full-installer
The softwareupdate command has some neat tricks up its sleeve, as pointed out by Armin Briegel:
The --fetch-full-installer flag has a sub-flag: --full-installer-version which allows you to download a specific version.
During my testing in the Catalina beta version I was able to download 10.15, 10.14.6, 10.14.5, and 10.13.6. I was not able to test if 10.13.6 would download the hardware specific build of 10.13.6 for the 2018 MacBook Pro, since I do not have that hardware.
So, to pull 10.13.6 down, you’d use:
Download Macos Sierra Installer App
softwareupdate --fetch-full-installer --full-installer-version 10.13.6
Download Macos High Sierra
I wish Apple would just have a support document up with direct downloads for all of this stuff, but this tool is not a bad alternative.
Download Macos High Sierra Installer App
Update: Don’t miss this documentation from JAMF for more on the subject.