sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
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Before deploying your macOS Big Sur 11.2.1 DMG, ensure the target machine is officially supported by Apple. Big Sur dropped support for several older Mac models. The compatible hardware list includes: 2015 and later MacBook Air: 2013 and later MacBook Pro: Late 2013 and later Mac mini: 2014 and later iMac: 2014 and later iMac Pro: 2017 and later (all models) Mac Pro: 2013 and later Conclusion
Key features and updates included in this version's installer/update are: MacBook Pro Battery Fix macos big sur 1121 installer dmg
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While later versions of Big Sur exist, version 11.2.1 specifically corrected historical ecosystem bugs: macOS Big Sur 11.2.1 is Out! - What's New?
: Optimizes overall kernel reliability and core app performance on both Intel and early Apple Silicon (M1) Macs. Compatibility: Can Your Mac Run Big Sur? sudo /Applications/Install\ macOS\ Big\ Sur
Open App Store → Click your name → Purchased → macOS Big Sur.
: Fix bricked or unbootable machines using external bootable media created directly from the DMG.
macOS Big Sur 11.2.1 Installer DMG: Download and Installation Guide The compatible hardware list includes: 2015 and later
Resolved a critical bug where some 2016 and 2017 MacBook Pro models were unable to charge past 1%. Installation Storage Check: The revised build (
The macOS Big Sur 11.2.1 update might appear as a minor version increment, but it included several important fixes that made it an essential upgrade. It was first released on February 9, 2021, and then a second build was pushed soon after to address a major installation issue.