FIRMWARE DETAILS

iOS 17.2.1

Build: 21C66Dec 19, 2023Restore IPSW

Stable

View details

Filename: iPhone14,8_17.2.1_21C66_Restore.ipsw
File size: 7.76 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: 892c5967cedf0765573a13c8fd8e6febffce270d898ac2712e7f4d0595de7398
SHA-1: 8057c1d71f193c936dad8d3f53b41719646c1f52
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 14 Plus iPhone14,8IPSW.me public API retrieval · Oct 23, 2026, 3:33 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%2C8?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: c61ac180821b8a66ea580a4207ac8633

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

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