FIRMWARE DETAILS

iOS 26.4.1

Build: 23E254Apr 8, 2026Delta OTA

Stable

View details

Filename: efa6c2bea1e7234792239fd5b5e26297c57477d886efdd5e71938c93c1e85f5c.aea
File size: 5.03 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: 5dc91fb3bef536cc71bd825b15f350cfe3a2319b13d6928808d235747857cfe7
SHA-1: ec18fd34e55869aa3fae4d205daba96f8fda8d38
Required starting builds: 22B83, 22B91
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