FIRMWARE DETAILS

iOS 17.3.1

Build: 21D61Feb 8, 2024Restore IPSW

Stable

View details

Filename: iPhone12,8_17.3.1_21D61_Restore.ipsw
File size: 7.29 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: ac8a76f501070e1ee1d6bbac33f079b915be8575247df91320495c955e35dd3c
SHA-1: 09130fe7a81b79d887d26bc3e2e236ea4a255348
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone SE (2nd generation) iPhone12,8IPSW.me public API retrieval · Oct 24, 2026, 3:13 PM 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/iPhone12%2C8?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 1abb0374f94d418a5ee7f1a1d5e10f0b

AppleDBhttps://api.appledb.dev/ios/iOS%3B21D61.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: caa4c3b8f1108221a1cf4826799a13ca