FIRMWARE DETAILS

iOS 26.3.1

Build: 23D8133Mar 4, 2026Restore IPSW

Stable

View details

Filename: iPhone18,4_26.3.1_23D8133_Restore.ipsw
File size: 10.74 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: 0f06f20855a0d2452b5ecb1e0186ad539100b3906827cd2888aaa60942e873a3
SHA-1: 5d138a0930f9ead4c45f42c851c5ece479e96830
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone Air iPhone18,4IPSW.me public API retrieval · Oct 23, 2026, 9:59 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%2C4?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 5046c6204023aa31aa76208e1133c684

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

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