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FIRMWARE DETAILS

iOS 26.5.1

Build: 23F81Jun 1, 2026Delta OTA
Stable

View details

Filename
717482d274d84839eae7032f96b056268afb66b10176edec56bc52c98d2fda62.aea
File size
486.5 MB
File type
Delta OTA
Download host
updates.cdn-apple.com
Link availability
Not verified

Source reports active

Last link check
Not checked
SHA-256
ca2959fb10891d1d73ed7a8c14dd74d64a0036a756cae277c2c67c8a4139a296
SHA-1
c217384336bfccc450d4bff455e9be5627428e0e
Required starting builds
23F75, 23F77
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