Click to download the "Install macOS High Sierra" app to your /Applications folder. Note: This usually downloads the latest 10.13.6 installer. 2. Using Terminal (For Tech Savvy Users)
The most reliable way to obtain the macOS High Sierra installer is directly from Apple. download macos high sierra 10135 image file rdr hot
If you're not an Apple Developer, you can still download the macOS High Sierra 10.13.5 update from the Mac App Store: Click to download the "Install macOS High Sierra"