FIRMWARE DETAILS

iOS 17.2.1

Build: 21C66Dec 19, 2023Full OTA

Stable

View details

Filename: 0f74958319f0667dba9f3e34cdf4ba11bbeaa569.zip
File size: 6.12 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: 2577cbb50f6cceed937e9557bb852f1473062514a842cff180946b5259ca69de
SHA-1: e7d111b656d38fb78752460afe69508c5c4a2e33
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 iPhone14,7

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%3B21C66.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: d446c7f095cdf40f999162af3ba1751c