FIRMWARE DETAILS

iOS 17.5.1

Build: 21F90May 20, 2024Full OTA

Stable

View details

Filename: f591ce0718124e4d8b78bc28f1b9356a851510bc.zip
File size: 6.13 GB
File type: Full OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 876fa99890bb2845c40866ceebda06ccd745869980cd7ff18826cf9f8e22e57f
SHA-1: c8043bd1b19190a787e1bebba2e8f854d62eaee2
Required starting builds: Not reported
Board restrictions: Not reported

OTA packages can require an exact starting build and board. A matching hardware identifier alone is not sufficient for installation.

Compatible hardware (1)

iPhone 12 mini iPhone13,1

Unknown

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

Source provenance

AppleDBhttps://api.appledb.dev/ios/iOS%3B21F90.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 1ae039bd01274135bfccfb7ce06a0234