Macos High Sierra 10.13.1 Jun 2026

macOS High Sierra added support for HEVC, a more efficient video codec that allows for smaller file sizes without sacrificing video quality.

Shortly after 10.13.1’s release, a massive security flaw was discovered that allowed anyone to gain full administrator "root" access macos high sierra 10.13.1

Version 10.13.1 maintained the same hardware requirements as the initial High Sierra release, making it the final macOS version to support several older "Unibody" Mac models. macOS High Sierra added support for HEVC, a

macOS High Sierra was Apple’s big push for on all SSD-based Macs. However, version 10.13.0 contained several alarming bugs related to disk encryption and volume management. macos high sierra 10.13.1

It breathes new life into machines built between 2009 and 2011 that cannot officially upgrade to Mojave or later.