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FIRMWARE DETAILS

iOS 17.4 beta 4

Build: 21E5209bFeb 20, 2024Delta OTA
Beta

View details

Filename
4e581ffb4c2096e57e7b729c0e6fa0f4fa14c5f1.zip
File size
520.0 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
8c9ca9ff1d3cceadddda9719a565ad4c0181acc94f58d897345c32dd8be3f511
SHA-1
bf3ad150368c061975bfe8a8106b554e1b6b1af6
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)

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