FIRMWARE DETAILS

iOS 26.3.1

Build: 23D8133Mar 4, 2026Restore IPSW

Stable

View details

Filename: iPhone18,3_26.3.1_23D8133_Restore.ipsw
File size: 11.04 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: e395f64fa5f6f443097944a4905546c2c8610dae570ce04c707bc26c5efdfdb9
SHA-1: d5cdb6f44819fd1dd51d323d730cffcb4cc245d2
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 17 iPhone18,3IPSW.me public API retrieval · Oct 23, 2026, 8:47 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/iPhone18%2C3?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: d1a0e1dad8040844563f1694f666cf0c

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

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