A high-quality DMG will complete this process without CRC errors. A broken DMG will fail halfway through, reporting "Could not restore... Invalid argument."
If you already have an earlier version of High Sierra (e.g., 10.13.5), you can download the 10.13.6 Combo Update DMG or the Standard 10.13.6 Update DMG from the Apple Support site. macos high sierra 10136 dmg high quality
can fetch the official 10.13.6 installer directly from Apple's servers. 2. Creating a Bootable Installer Once you have the Install macOS High Sierra.app A high-quality DMG will complete this process without