FIRMWARE DETAILS

iOS 17.0 beta 4

Build: 21A5291hJul 25, 2023Delta OTA

Beta

View details

Filename: bb5fdf5d0a969b99ea05f7c9c753eaab247aec0b.zip
File size: 2.84 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: c83544e77c17c2de42ac6740aa6bcfb88ef5e3d43d0cf118616776bd7ee4ec74
SHA-1: 4c247787828c7b5eb4ac43e3f41c9f5268ec7c68
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 SE (2nd generation) iPhone12,8

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