FIRMWARE DETAILS

iOS 17.4.1

Build: 21E237Mar 27, 2024Restore IPSW

Stable

View details

Filename: iPhone15,4_17.4.1_21E237_Restore.ipsw
File size: 8.03 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: a3ba3126c42427685306e5edcc7621947ca27e6b995f2bda04748efe5d858470
SHA-1: 294b459fa7008fdd2c49df4b1619419bd53beb3c
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 15 iPhone15,4IPSW.me public API retrieval · Oct 22, 2026, 11:29 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%3B21E237.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: d26a9b7d51c911646168a6c1a25feb60

IPSW.mehttps://api.ipsw.me/v4/device/iPhone15%2C4?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 3df9ddeab6434ee55c339b2cbb552b36