FIRMWARE DETAILS

iOS 17.1 beta 2

Build: 21B5056eOct 3, 2023Delta OTA

Beta

View details

Filename: 0c455a45a5323370a407ebd4734ca309e41722a5.zip
File size: 636.3 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: 9cc7da08eb23814b2546bd8f8a381fc97965677da7ae96416792faf0c1af3091
SHA-1: 57e6a2281ed3fd46298e49c8baf2c58c08b74f06
Required starting builds: 21B5045h
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)

iPhone 11 iPhone12,1

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%3B21B5056e.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: a5e7797b0709d6a60d5270c75026ee0d