FIRMWARE DETAILS

iOS 26.4.1

Build: 23E254Apr 8, 2026Delta OTA

Stable

View details

Filename: ea5dfd13db5780f41c77740379d0690c6cf761c9dd17f5899cc59f1663c5a0b1.aea
File size: 5.84 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: 548a67b5f0ae93aef4edd14c224df32ac317c0cb48464cbe95401ede631734cb
SHA-1: 163ae6128dc8453f0a8c8207027b0c9683c9e5e3
Required starting builds: 21H16, 21H216, 21H221
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 15 iPhone15,4

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