FIRMWARE DETAILS

iOS 17.5.1

Build: 21F90May 20, 2024Restore IPSW

Stable

View details

Filename: iPhone14,4_17.5.1_21F90_Restore.ipsw
File size: 7.92 GB
File type: Restore IPSW
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 3af8ce45cfcc475f4c7ca44a3e0a8bd59125c362f1a99d7c02d6fff2d062fc6b
SHA-1: a24eff810ec27d1eefcea64e36ce7e0c0a6c6bc9
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 13 mini iPhone14,4IPSW.me public API retrieval · Oct 23, 2026, 3:31 PM UTC

Unsigned

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

Source provenance

IPSW.mehttps://api.ipsw.me/v4/device/iPhone14%2C4?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 0b9a1aab1381275aeddb3b7eeb2e6ff5

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

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