FIRMWARE DETAILS

iOS 17.2.1

Build: 21C66Dec 19, 2023Restore IPSW

Stable

View details

Filename: iPhone14,6_17.2.1_21C66_Restore.ipsw
File size: 7.50 GB
File type: Restore IPSW
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 8026a07badd1eb96ef7c6c1d3765fe431e066112ad0abf23968432f793a345b1
SHA-1: 85bfa91f74e20b90925c693fec8d6af6985027e4
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone SE (3rd generation) iPhone14,6IPSW.me public API retrieval · Oct 21, 2026, 5:47 PM UTC

Unsigned

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

Source provenance

IPSW.mehttps://api.ipsw.me/v4/device/iPhone14%2C6?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 2a12eaa1fc9e1029ec2e59acaeeb27fd

AppleDBhttps://api.appledb.dev/ios/iOS%3B21C66.json ↗

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