FIRMWARE DETAILS

iOS 17.6.1

Build: 21G101Aug 19, 2024Restore IPSW

Stable

View details

Filename: iPhone15,4_17.6.1_21G101_Restore.ipsw
File size: 8.09 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: 331f043f07500a60eed5317b7515b8a2c15adf338d4ec8574d19a882563ed259
SHA-1: 0343bbf84ae44377fd6d750ac61707d27bb1c4c0
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 15 iPhone15,4IPSW.me public API retrieval · Oct 22, 2026, 10:57 AM 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/iPhone15%2C4?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 8ebb5a38bca766b65264df8b199b617a

AppleDBhttps://api.appledb.dev/ios/iOS%3B21G101.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: fa83dae98379e752d48badccb601c2fa