FIRMWARE DETAILS

iOS 26.4.1

Build: 23E254Apr 8, 2026Delta OTA

Stable

View details

Filename: 5073017d06a25e991cdcac0d5bcecdd0e20314119b2781ee5bd735b0be6c9b3f.aea
File size: 654.3 MB
File type: Delta OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 593117d441fb1365e8c70035d334a79bc1fbc57533e6fc674051e94173e61ed2
SHA-1: 05a7618476dda20bad2fe51d3d38a07e93ee9415
Required starting builds: 23E244, 23E246
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 Pro iPhone17,1

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