Apple does not advertise this, but you can still download High Sierra 10.13.6 directly from Apple’s servers—provided you have a Mac running macOS Sierra or later.
: Some MacBook Pro (2018) models require a specific supplemental update build (17G2112) for proper hardware support. If you have a 2018 MacBook Pro with Touch Bar, consider installing the supplemental update after base installation. download mac os high sierra 10136 dmg verified
: If you are on a compatible Mac running macOS Catalina or later, you can use this command in Terminal to fetch the full installer: Apple does not advertise this, but you can
It resolves the majority of bugs found in earlier High Sierra releases. Apple does not advertise this
Once you have your verified DMG (or .app file):