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FIRMWARE DETAILS

iOS 17.1

Build: 21B74Oct 25, 2023Restore IPSW
Release CandidateStable

View details

Filename
iPhone11,8_17.1_21B74_Restore.ipsw
File size
7.43 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
014b967693ad85283913ab0aac7a553d3d591c26e89ddf4db5994f7e66609e08
SHA-1
163c5c2ff7a90ebad378b94b924ae1225cc078ff
Required starting builds
Not reported
Board restrictions
Not reported

Compatible hardware (1)

iPhone XR iPhone11,8IPSW.me public API retrieval · Oct 23, 2026, 5:33 PM UTC
Unsigned

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%3B21B74.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: ce1037df7218db6f4121eac6e89afc29

IPSW.mehttps://api.ipsw.me/v4/device/iPhone11%2C8?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 10:59 PM UTC
Record fingerprint: 162ac5fd57cd33de226c6b007f90a430

AppleDBhttps://api.appledb.dev/ios/iOS%3B21B74-RC.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 596792c64544009bb3cdf2ce13596537