FIRMWARE DETAILS

iOS 26.4.1

Build: 23E254Apr 8, 2026Delta OTA

Stable

View details

Filename: 562ee811a8b15545c0d5fe12192b7d9393d10b9fde33e3ce9f8700e7af14ae92.aea
File size: 4.09 GB
File type: Delta OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 9a02dc7b63a2b763a99037d0967318b8bcdfcc936ebf0321fecec3041689285f
SHA-1: f223086cafe272c9678422da3de38ec2dc58a5f7
Required starting builds: 23C52, 23C54, 23C55, 23C71
Board restrictions: Not reported

OTA packages can require an exact starting build and board. A matching hardware identifier alone is not sufficient for installation.

iPhone 17 Pro Max iPhone18,2

Unknown

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:25 PM UTC
Record fingerprint: 068f9108c631b2be9610754c465ed403