FIRMWARE DETAILS

iOS 26.5.1

Build: 23F81Jun 1, 2026Restore IPSW

Stable

View details

Filename: iPhone18,1_26.5.1_23F81_Restore.ipsw
File size: 11.32 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: 33d26ed385ca2a0d7da18f9e62fa7709a6c341b06e13916e25f167b889ce3c1c
SHA-1: ae3500d9b177a3712328c29b9b070ba4421a9f1c
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 17 Pro iPhone18,1IPSW.me public API retrieval · Oct 21, 2026, 1:02 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%3B23F81.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:25 PM UTC
Record fingerprint: 5c942573abf0119b4e5bd563e9638914

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: c92dae182a7025f4e834e7c983cf53f2