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FIRMWARE DETAILS

iOS 26.4.1

Build: 23E254Apr 8, 2026Delta OTA
Stable

View details

Filename
d4da78e5ea8fe5f2c37083d13ca8c34a3776b391.zip
File size
5.77 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
896386a29de27f8502f3dfe2eaf78bad8f8798df23ba96bc1c19a664eff6172f
SHA-1
d4da78e5ea8fe5f2c37083d13ca8c34a3776b391
Required starting builds
21F101, 21F79, 21F90
Board restrictions
Not reported

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

Compatible hardware (1)

Unknown

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

Source provenance

AppleDBhttps://api.appledb.dev/ios/iOS%3B23E254.json ↗

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