FIRMWARE DETAILS

iOS 26.3.1

Build: 23D8133Mar 4, 2026Restore IPSW

Stable

View details

Filename: iPhone18,1_26.3.1_23D8133_Restore.ipsw
File size: 11.01 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: a3d38406af21b2212304d235744d56666a9c054149792d9837d1795890d0f832
SHA-1: c574282d8088216fa110c98356b8099d1e415273
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 17 Pro iPhone18,1IPSW.me public API retrieval · Oct 21, 2026, 4:21 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/iPhone18%2C1?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 7a54cf7721d30e4f98259b9d0297f6ca

AppleDBhttps://api.appledb.dev/ios/iOS%3B23D8133.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:25 PM UTC
Record fingerprint: d48da896f63809bf3a31e9d1728e206a