package. This is a smaller 1.11 GB file designed specifically for existing Sierra users. Apple Support macOS Sierra 10.12.6 Update - Apple Support Third-Party Archives (For Virtual Machines) For users who need an
For users without access to the App Store, the Internet Archive hosts a bit-for-bit verified copy. Mac Os Sierra 10.12.6 Dmg File Download
softwareupdate --fetch-full-installer --full-installer-version 10.12.6 package
Apple provides official channels to download older versions of macOS to ensure the installer's integrity and security. Mac Os Sierra 10.12.6 Dmg File Download