FIRMWARE DETAILS

iOS 17.4

Build: 21E219Mar 5, 2024Delta OTA

Stable

View details

Filename: 85399d117953789fd9e999c058aaf5116d1a9312.zip
File size: 4.73 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: 32c71b9ff8447eebd0d5f620c1d774e52df826ab795a80ff261c5b84891e5509
SHA-1: b2dab82ce819e93bbed5e6cd14d2134fac236ca0
Required starting builds: 19C56, 19C63
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 12 iPhone13,2

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%3B21E219.json ↗

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