FIRMWARE DETAILS
iOS 17.1
Build:
21B74Oct 25, 2023Full OTARelease CandidateStable
View details
- Filename
17667417cb15a17ff81c6f76a16496720fcb0dbe.zip- File size
- 6.36 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
fd9030ff17fbffd237cb84d8c12d90df55cfd6e2c08fa578017ee6f0b43ceb36- SHA-1
a6174f2bdab3b2baf2bddc7e36b6d1855a50f0e4- 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 14 Pro
UnknowniPhone15,2Signing 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%3B21B74.json ↗
MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: ce1037df7218db6f4121eac6e89afc29
AppleDBhttps://api.appledb.dev/ios/iOS%3B21B74-RC.json ↗
MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 596792c64544009bb3cdf2ce13596537