FIRMWARE DETAILS

iOS 14.3

Build: 18C66Dec 14, 2020Restore IPSW

Stable

View details

Filename: iPhone13,4_14.3_18C66_Restore.ipsw
File size: 5.57 GB
File type: Restore IPSW
Download host: updates.cdn-apple.com
Link availability: Not verified
Source did not report availability
Last link check: Not checked
SHA-256: 692e22897fb6738fb10c1be5dbb841978eec6c9776cc9c38839cf07797058dff
SHA-1: 79692fd20e96f1c5831bdd4dff0b71e46918634b
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 12 Pro Max iPhone13,4IPSW.me public API retrieval · Oct 21, 2026, 9:25 AM 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/iPhone13%2C4?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 55682616ae6aeb3a067f69c33764d50f