Macos Big Sur 11.5.1 (20g80) May 2026

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

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

: Available for all Macs compatible with Big Sur, including MacBook (2015+), MacBook Air (2013+), and iMac (2014+). While 11

: Users typically install this by going to System Preferences > Software Update . While 11.5.1 was security-focused

Released on July 26, 2021, is a maintenance update primarily focused on a critical security patch. Key Update Details

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

: Addresses a serious vulnerability in the IOMobileFrameBuffer .