FIRMWARE DETAILS

iOS 17.4

Build: 21E219Mar 5, 2024Full OTA

Stable

View details

Filename: 1b97665bb5d0f764107ee1b3db8fd29623827ac5.zip
File size: 6.31 GB
File type: Full OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: a7aeed22f58e8c94e0d4a151618bc5507abe4f760160d3be5c04f51b08a0b25f
SHA-1: 3bd96ae972dfd43a5a0433c85ce409b485e8a40e
Required starting builds: Not reported
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 15 iPhone15,4

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%3B21E219.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: c89b542f4c3e0674573e93f3ad0939c2