FIRMWARE DETAILS

iOS 17.4.1

Build: 21E236Mar 21, 2024Full OTA

Stable

View details

Filename: e88499d95658d25b0b53c69c1b16f814ff5302ba.zip
File size: 6.31 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: f0ad6126968702a7061b9c19d7b995a2aac41b507c0d3baced196d56df2daeef
SHA-1: 537b2cf50e7ebaa7bb5efe30c8877fa5d312eef7
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 Plus iPhone15,5

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