firmwarehub.
العربية
FIRMWARE DETAILS

iOS 17.4.1

Build: 21E236Mar 21, 2024Delta OTA
Stable

View details

Filename
066ef6fe1ecdc6a2eca366e3ff4385d12aedca4d.zip
File size
1.51 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
ee81044ced42b10de613e5d28230fa16730948cf86b9c0f086fa7a6bd3769b0c
SHA-1
5e057658e4ff5e5b9c48d230bb7ce5292b7d4845
Required starting builds
21C62, 21C66
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%3B21E236.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 35d6f74f80d62b482e435ab6b7815260