FIRMWARE DETAILS

iOS 17.0 beta 4

Build: 21A5291jJul 31, 2023Delta OTA

Beta

View details

Filename: 6b4efd365e8f5a2b43444a0d7e0bd556fea9a3a8.zip
File size: 292.6 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: ae96341cf37c899201258ce6a7a163ac162524ae3675c22ccaaa6a25ad0451da
SHA-1: d9d6dfd0290c1ac16f078a74b44ebc1324cde2a1
Required starting builds: 21A5291h
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 12 mini iPhone13,1

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%3B21A5291j.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 1a482bda17ccfbe4995fdb9086fbae7f