FIRMWARE DETAILS

iOS 17.7.1

Build: 21H216Oct 28, 2024Delta OTA

Release CandidateStable

View details

Filename: b439dc764589184ac5ee53e63d1a6075b76af5ca.zip
File size: 4.90 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: 46573a178cc7f91b973af74ce42c82eb33f9a51867025f656acde1e68a3d362e
SHA-1: 9f4048120be94c97b9b717ba8e0ceb2c0fbc8b33
Required starting builds: 19A340, 19A341, 19A345, 19A346, 19A348, 19A404
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%3B21H216-RC.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:27 PM UTC
Record fingerprint: e81d7c9fd3ed4ef3917cac95ad2b8b45

AppleDBhttps://api.appledb.dev/ios/iOS%3B21H216.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:27 PM UTC
Record fingerprint: 8bcbb794adc258f42e682d442c6740ea