In this workaround, we’ll directly download the raw packages from Apple servers using the web browser or a dedicated download manager. Only when MAS processes these files during the download, are they converted to an installable (.app) file that can run on your Mac. These packages are not directly installable on your Mac. Ideally, when you download macOS Sierra from the Mac App Store, some raw package files will be downloaded to your computer. 3 macOS Sierra Bootable Installer (macOS Sierra DMG)ĭownload and Install macOS Sierra without MAS.1 Download and Install macOS Sierra without MAS.
