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macOS Big Sur 11.2.1 Official Full Installer
macOS Big Sur 11.2.1 Full Official Installer from Software Update - Build (20D75)
Released February 15, 2021.
Open
the .zip file for the.app macOS Big Sur Installer. A bootable USB drive
or .iso file can be made from this installer. Instruction on how to do
that are on the internet.
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TO CREATE BIG SUR ISO:
https://www.niallbrady.com/2020/11/18/creating-the-macos-big-sur-iso/
TO CREATE BOOTABLE INSTALLER USB:
https://www.macworld.com/article/3566910/how-to-create-a-bootable-macos-big-sur-installer-drive.html
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