Direct signed and unsigned iOS IPSW firmware download links, restore files, release metadata, downgrade status and build information for iPhone 13 Pro Max running iOS 17.5.1.
Build Number: 21F90
Release Date: 2024-05-20T18:01:23Z
Download IPSW FileiOS 17.5.1 build 21F90 is a firmware package available for iPhone 13 Pro Max and is currently unsigned by Apple at the time of indexing.
Black Apple World tracks signed and unsigned firmware states, build numbers, release metadata and direct IPSW file locations across all iPhone generations.
Users commonly search for IPSW downloads to verify firmware authenticity, reference signed firmware availability, compare build transitions and maintain an archive of official Apple restore files.
No. Apple is no longer signing this firmware build.
21F90
Yes. A direct Apple-hosted IPSW firmware link is available on this page.