Apple Support - Download macOS . Installation Process from DMG
Create a bootable USB installer (16 GB recommended): Mac Os Sierra 10.12.6 Dmg File Download
To download the file directly from Apple, you can use the official link provided in their support documentation. Official Download Link Apple Support - Download macOS
There are a few ways to download the Mac OS Sierra 10.12.6 DMG file: Mac Os Sierra 10.12.6 Dmg File Download
: If you need to do a clean install, you can now use this app to create a bootable USB using the createinstallmedia command in Terminal. Updates Only (For existing 10.12 users)