FIRMWARE DETAILS

iOS 17.4.1

Build: 21E236Mar 21, 2024Delta OTA

Stable

View details

Filename: df3e51e3e5d7408faa4e1596a61a5e7284113c35.zip
File size: 3.69 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: 0557776add1dd08ceac4311e043d4668776d3ace9127e3fd95cb8a7d4298ab9f
SHA-1: c144f2793ae631c1909853cdb03f1e485e967484
Required starting builds: 20G75, 20G81
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 13 Pro iPhone14,2

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