FIRMWARE DETAILS

iOS 26.5.1

Build: 23F81Jun 1, 2026Delta OTA

Stable

View details

Filename: ea0de01d713d8edfc68eaff3476c56b17e8c60ff7f4d387a176ea0c7c99f9a36.aea
File size: 411.0 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: b7205a1551aaa8ada7852594934bd4c69f8cde6630e97d600c1851b69b0ccd45
SHA-1: f763a40a19d2b17a61399945eb47a4c78ea1f9c5
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.

iPhone 17e iPhone18,5

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