Macos Big Sur 11.5.1 (20g80) May 2026

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

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

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

: Apple stated they were aware of reports that this issue may have been actively exploited in the wild. : Fixed an issue where the play count

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

: This was a "surprise" security patch released just five days after version 11.5. Key Update Details : Despite being a single-patch

: Updated the Library tab to allow users to see all shows or only followed shows.