FIRMWARE DETAILS

iOS 17.4.1

Build: 21E236Mar 21, 2024Full OTA

Stable

View details

Filename: 2b6d7875f18738c115ba162692ed5a41dabdaac4.zip
File size: 6.46 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: a51689396182985dc1c0ced9d5448d63444ba6a49138e7aa5d1aaa1eae5f270c
SHA-1: 1c4c0f1996072f43197827bd1aa9fbbc38195c54
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 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%3B21E236.json ↗

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