FIRMWARE DETAILS
iOS 17.7.1
Build:
21H216Oct 28, 2024Delta OTARelease CandidateStable
View details
- Filename
5d7edbc98d0e6357f5393039fb9c79d78ea21510.zip- File size
- 1.75 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
51cad7f39b39420db125ea7deb7fe13c9fd319be3ce34a2e26a85762ea08cd0e- SHA-1
f55af73b1b1e47909c4b9e7c80e57c6a0d69e565- Required starting builds
21D50, 21D61- 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 Pro Max
UnknowniPhone13,4Signing 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