Even a stable update like 10.13.1 can hit snags, especially when installed years later. Here are typical problems and solutions.
Early versions of High Sierra sometimes struggled to update the boot ROM firmware or properly partition certain third-party solid-state drives.
Select your internal hard drive (usually named Macintosh HD). macos high sierra 10.13.1 dmg
OS X Mountain Lion 10.8 or later to upgrade directly 2. Key Features and Enhancements in macOS 10.13.1
Disconnect your Mac from the internet. Open Terminal within the installer environment ( Utilities > Terminal ) and change the system clock to a date closer to the software release. Type date 1025101017 (representing October 25, 2017) and press Enter . Quit Terminal and restart the installation wizard. Error: "The recovery server could not be contacted." Even a stable update like 10
Apple stopped signing most older High Sierra versions, so even if you find a 10.13.1 DMG, it may not install without date manipulation. For security, always use the latest available point release (10.13.6) unless you have a very specific hardware/software requirement.
Note: Apple’s createinstallmedia tool needs the full "Install macOS High Sierra.app" in /Applications. If you only have a DMG that contains the installer app, first mount it and copy the installer to /Applications. Select your internal hard drive (usually named Macintosh HD)
The installer is trying to verify components online but cannot establish a secure handshake with Apple's outdated servers.