For older Mac versions, Apple provides a direct disk image (.dmg) or package (.pkg) file. You can download the macOS Sierra 10.12.6 Update or the Combo Update directly from Apple Support .
Before downloading and installing macOS Sierra 10.12.6, make sure your Mac meets the system requirements: work download macos sierra 1012 6
: Specifically addressed issues like resolving a problem that caused some SMB connections from Finder to unexpectedly close. How to Download For older Mac versions, Apple provides a direct disk image (
: Inside, you will find a file named InstallOS.pkg . Open it and follow the onscreen instructions. For older Mac versions