Macos Big Sur 1121 Installer Dmg Jun 2026

softwareupdate --fetch-full-installer --full-installer-version 11.2.1

Approximately 11.4 GB to 12.6 GB for the full installer macos big sur 1121 installer dmg

macOS Big Sur 11.2.1, released in February 2021, acts as a crucial maintenance update addressing a 2016-2017 MacBook Pro charging bug, a serious sudo security vulnerability, and installer disk space verification issues. The update is available in two builds, with the updated 11.2.1 (20D75) specifically addressing a bug that allowed insufficient storage during installation, leading to potential data loss. For a detailed breakdown of the update's features and fixes, visit Macworld . released in February 2021

: Ensure you have at least 44.5GB of free space for a successful installation. a serious sudo security vulnerability