Macos Big Sur 11.5.1 (20g80) [TESTED]

: This was a "surprise" security patch released just five days after version 11.5.

: Available for all Macs compatible with Big Sur, including MacBook (2015+), MacBook Air (2013+), and iMac (2014+). macOS Big Sur 11.5.1 (20G80)

Released on July 26, 2021, is a maintenance update primarily focused on a critical security patch. Key Update Details : This was a "surprise" security patch released

: An application could potentially execute arbitrary code with kernel privileges. including MacBook (2015+)

: Users typically install this by going to System Preferences > Software Update .

: Resolved an issue where smart cards might not work correctly when logging into M1-based Macs. Installation & Compatibility

: Fixed an issue where the play count or last played date might not update in the library.