Is it possible to install the 11.2.1 update OVER an existing 11.2.1 system? That used to be possible when combo updates were available (RIP combos). There is a Big Sur download available at App Store but I don't know if it's the whole shebang or just the update. (I suspect it's the entire OS.)
Jon
macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365
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