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FIRMWARE DETAILS

iOS 26.5.1

Build: 23F81Jun 1, 2026Delta OTA
Stable

View details

Filename
d6463676ff1e3f2bc403e953d1e042f3ae7e711ad4e8e79441f9a25e7866014e.aea
File size
4.50 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
e75c22a116de616430cd57899e909b7298b1e7c571bc0e86b05dd3256811021e
SHA-1
7b56d0e987fa138c9cadc5975f9c630bfcf94976
Required starting builds
23A330, 23A340, 23A341, 23A345
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%3B23F81.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:25 PM UTC
Record fingerprint: 5c942573abf0119b4e5bd563e9638914