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FIRMWARE DETAILS

iOS 17.1

Build: 21B74Oct 25, 2023Restore IPSW
Release CandidateStable

View details

Filename
iPhone13,4_17.1_21B74_Restore.ipsw
File size
7.82 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
cb6ef047aa08486af3c5bc3234cb96e2fe5294d2dcd93c5920d7adc49814d671
SHA-1
3d8733ee6fc36e07f83443ee98570fe6a2fc16af
Required starting builds
Not reported
Board restrictions
Not reported

Compatible hardware (1)

iPhone 12 Pro Max iPhone13,4IPSW.me public API retrieval · Oct 23, 2026, 6:20 AM 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/iPhone13%2C4?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 80ff72e2a0ce11a5b67b5880e4cc60e1

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