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FIRMWARE DETAILS

iOS 17.7.1

Build: 21H216Oct 28, 2024Delta OTA
Release CandidateStable

View details

Filename
955322180a68c5e9768e44d8adb96e9f0fa5ed47.zip
File size
2.20 GB
File type
Delta OTA
Download host
updates.cdn-apple.com
Link availability
Not verified

Source reports active

Last link check
Not checked
SHA-256
10c1c8abdbfa9e39559de82e0976b489ab07b99bbdf88667c5a08f57dce2a586
SHA-1
cdecd0cbd7132f345d00efa2b0990ff0b744a0c3
Required starting builds
21B101, 21B74, 21B91
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 Pro iPhone13,3
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%3B21H216-RC.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:27 PM UTC
Record fingerprint: e81d7c9fd3ed4ef3917cac95ad2b8b45

AppleDBhttps://api.appledb.dev/ios/iOS%3B21H216.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:27 PM UTC
Record fingerprint: 8bcbb794adc258f42e682d442c6740ea