FIRMWARE DETAILS

iOS 17.4 beta 4

Build: 21E5209bFeb 20, 2024Delta OTA

Beta

View details

Filename: b1f93c1f257e029e4a78ff535261241c340ce3ad.zip
File size: 534.6 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: 297f4126b45ebe65f3e393c3f82fea2d140636dbb4c770894790f3208986f723
SHA-1: 906bd0dbf3aeed0e08613aa0dec89dfb3d91eea6
Required starting builds: 21E5200d
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%3B21E5209b.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: fe63c79b1c14a24f0f284bf400b7ab04