FIRMWARE DETAILS

iOS 17.0 beta 4

Build: 21A5291jJul 31, 2023Delta OTA

Beta

View details

Filename: 37a068e0b28e8771d8dc48457ee8677fe7666f1b.zip
File size: 3.15 GB
File type: Delta OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 4d40372ce5b1de9ea1c0f4a785ad76cceabf61367d08f2b5229c5e3e6bbdd727
SHA-1: 47135db308341b453836771ae81cf6af771f4bcb
Required starting builds: 20G5070a
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 13 iPhone14,5

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