FIRMWARE DETAILS

iOS 26.5.1

Build: 23F81Jun 1, 2026Full OTA

Stable

View details

Filename: e281213ae8aa19d6e5cfec18df60b5cc8cfed95b9af4555e1b983c8f3a777673.aea
File size: 8.72 GB
File type: Full OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 42a603e2fb713fba89ab35308468c81e50d6f73b2b93f72f769a571a45c003b3
SHA-1: 4578b2193819f2d040925a59bcdae7883b3363c0
Required starting builds: Not reported
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 17 iPhone18,3

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, 6:25 PM UTC
Record fingerprint: 5c942573abf0119b4e5bd563e9638914