FIRMWARE DETAILS

iOS 17.0 beta 4

Build: 21A5291hJul 25, 2023Delta OTA

Beta

View details

Filename: 4f173335aed192f59875389e78584001dadfbadd.zip
File size: 1.10 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: 671bac03a28c5ea7bbc86e745a6c919ea21aa3cea9bbc47177f4dce9d4eb5873
SHA-1: a5df6bd4a76d7d6fee6714ca5bca7908dd62ef0b
Required starting builds: 21A5277j
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 XS iPhone11,2

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%3B21A5291h.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: b29867d33fa2e577f08805e98a6da026