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)

: Fixed an issue where the play count or last played date might not update in the library. While 11

: This was a "surprise" security patch released just five days after version 11.5. : Despite being a single-patch update, the download

: 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

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

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