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FIRMWARE DETAILS

iOS 17.4.1

Build: 21E236Mar 21, 2024Delta OTA
Stable

View details

Filename
c7cfb76e26ffa8fbdfae0c70ceaf5ff2b92b0a1b.zip
File size
4.80 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
8f20f0f6c4f3ee6a213e2ad23378d7c4cb91fe16fbf9f30bb09434b466a95d60
SHA-1
8cd3239ccc7b5d05dc39c8a20dd11e8d6ab79da2
Required starting builds
19C56, 19C57, 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)

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