FIRMWARE DETAILS

iOS 17.4

Build: 21E219Mar 5, 2024Delta OTA

Stable

View details

Filename: d25e68b6acac87343798c27654830bdddef7f989.zip
File size: 2.18 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: fa95e1d512c22535c2060af73de446cabbecf5caf038ab3d4a3dd2e544e76039
SHA-1: c920eb89362dc6e59b7b94154bc936b0b368efbd
Required starting builds: 21A340, 21A350, 21A351
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 Pro iPhone16,1

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%3B21E219.json ↗

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