FIRMWARE DETAILS

iOS 26.4.1

Build: 23E254Apr 8, 2026Delta OTA

Stable

View details

Filename: 90e916c753630be6b8f5bbf1c785f13f2a24c697778023f0e27060d0ea76dc72.aea
File size: 2.82 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: d05b37176b542830330adc0a25eb742fae6ac8b3aee3208233b29730a34acf8d
SHA-1: 06d438b5357289f56aecbfed7adc94942c4b10ab
Required starting builds: 23D8128, 23D8133
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 Air iPhone18,4

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