Macos Big Sur 11.5.1 (20g80) May 2026

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

While 11.5.1 was security-focused, it carries over the bug fixes introduced in 11.5 (20G71), including: macOS Big Sur 11.5.1 (20G80)

: Despite being a single-patch update, the download size was approximately 2.2 GB for Intel Macs and over 3.1 GB for M1 Macs . Improvements from the 11.5 Branch : Resolved an issue where smart cards might

: Updated the Library tab to allow users to see all shows or only followed shows. macOS Big Sur 11.5.1 (20G80)

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

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