The stub installer is mainly little in size. Download only the stub installer means web installer is the main reason that only users may be downloading from the app store. MacBook Pro introduced in mid 2010 or laterĭownload: Mac OS Sierra 10.12 ISO and DMG Image. MacBook Air introduced in late 2010 or later Your Mac also needs at least 2GB of memory and 8.8GB of available storage space. You can upgrade to macOS Sierra from OS X Lion or later on any of the following Mac models. Download MacOS X 10.4 - 10.15 Original - All Versions - Mac.Mac Os X Sierra 10.12 Dmg Torrent Downloads.