FIRMWARE DETAILS

iOS 26.4.1

Build: 23E254Apr 8, 2026Delta OTA

Stable

View details

Filename: 6640611b3fd19cfc0f543e49e36c132e901786e0b94ccb4f80ebf86ff48f286b.aea
File size: 5.17 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: 04f2a5c6065061e0b90ecee3f1350ee62e288945942e26eb51204f7a8bce49e9
SHA-1: 66ccfd148475a7b7afa6041dc768081eb8340bc5
Required starting builds: 22H123, 22H124
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 16 iPhone17,3

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