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FIRMWARE DETAILS

iOS 17.4

Build: 21E219Mar 5, 2024Delta OTA
Stable

View details

Filename
8b022807866104e361f4d7eaab54748dd88a490c.zip
File size
3.95 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
a0ea1b02f3062ac266da1627cc4b58267f31e46550406c290e3fe12179489b5a
SHA-1
b0e8462bec5f017628b4eb22ed4de8e499c794c3
Required starting builds
20C65, 20D47, 20D67
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%3B21E219.json ↗

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