Released in 2016, this was the first version to drop the "OS X" branding. macOS High Sierra (10.13): Released in 2017 as a refinement of Sierra, introducing the Apple File System (APFS) and Metal 2 for better performance. Official DMG Download Methods
file for Sierra (10.12), follow these steps to extract the actual installer: Apple Support Community Open the DMG: Double-click InstallOS.dmg Run the PKG: Inside, double-click InstallOS.pkg Follow the prompts. This download macos high sierra 1012 dmg exclusive
Follow the onscreen instructions to place the actual "Install macOS" app into your Applications Create Bootable Media: If you are performing a clean install, you can use the createinstallmedia Released in 2016, this was the first version
Apple hides older installers. If you go to the App Store today, searching “High Sierra” redirects you to the latest macOS. The official installassistant.pkg or InstallMacOSHighSierra.dmg is no longer listed publicly. This is why users search for an exclusive source—but beware: 90% of websites claiming to offer a “macOS 10.12 High Sierra DMG exclusive” are either fake, filled with adware, or corrupted zip bombs. This Follow the onscreen instructions to place the
Searching for "macOS High Sierra 10.12" is a common mistake because version is actually macOS Sierra , while macOS High Sierra is version 10.13 . If you are looking for a legitimate DMG to perform a clean install, create a bootable USB, or use a virtual machine, it is safest to use official Apple sources. Official Download Options