This topic covers the acquisition of macOS High Sierra (10.13.6)
shasum (with a space).InstallESD.dmg into the Terminal window.If you cannot access the App Store, some reputable community archives provide DMG files. However, . Verify the file's SHA-1 or MD5 checksum against known official values to ensure the installer hasn't been tampered with. If you'd like, I can help you: Troubleshoot specific installation errors. Find the checksums for the official 10.13.6 release. download+macos+high+sierra+10136+dmg+mac+install
Version 10.13.6