FIRMWARE DETAILS

iOS 26.1 beta 4

Build: 23B5073aOct 20, 2025Delta OTA

Beta

View details

Filename: a5bb45dd8a68316de088145dddb941f89de6829d96d9a858e1b5cd70fa2addf0.aea
File size: 2.35 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: ffa1b3284c9436306ed8ca58a6dab671dcb4782891ae48318618861340f18e57
SHA-1: 110356c1bbe54334493646bf951567c2d54f8606
Required starting builds: 23B5064e
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 iPhone17,3

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, 6:26 PM UTC
Record fingerprint: 18d16b0fe5b5f30c945b62b572d3ecde