FIRMWARE DETAILS

iOS 17.3.1

Build: 21D61Feb 8, 2024Restore IPSW

Stable

View details

Filename: iPhone15,5_17.3.1_21D61_Restore.ipsw
File size: 7.95 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: 0866395a460d94d0d24d32c2336b2dde92780c535d1910d8accb2b16a8db85b1
SHA-1: 7324951df305430ab7eb04564179c47277a4b4bc
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 15 Plus iPhone15,5IPSW.me public API retrieval · Oct 22, 2026, 1:16 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%3B21D61.json ↗

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

IPSW.mehttps://api.ipsw.me/v4/device/iPhone15%2C5?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: f1922d23579f14d3bdbcd30c311e8728