The macOS High Sierra 10.13.1 update was released on October 31, 2017. While Apple typically provides smaller delta or combo updates as standalone installers, the full 10.13.1 DMG (approximately 4.8GB to 5.2GB) was primarily used for fresh installations or creating bootable media. Version & Download Information Version: 10.13.1 (Build 17B48) Release Date: October 31, 2017 Availability:
If you specifically need a .dmg (e.g., for creating a bootable USB on Windows or for a virtual machine), you have two main options: macos high sierra 10131 dmg
System Requirements
Official Sources: While direct DMG links are rare on modern Apple Support pages, you can often still access the Mac App Store link for High Sierra if your hardware supports it [33]. The macOS High Sierra 10
This version focused on stability and security rather than major interface changes: Emoji Expansion: Storage : 14
While the final security update for High Sierra arrived in late 2020, its stability makes it a "good story" for those keeping older hardware alive and functional well into the 2020s. or instructions on how to create a bootable USB from that DMG? Using macOS High Sierra in 2025
Create Your Own: Download the .app installer from the App Store on a compatible Mac, then use Terminal commands to convert the installer into a bootable DMG.