FIRMWARE DETAILS

iOS 14.2.1

Build: 18B121Nov 19, 2020Restore IPSW

Stable

View details

Filename: iPhone13,4_14.2.1_18B121_Restore.ipsw
File size: 5.51 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: 8cee4ef1fcbeb56de8f748a007ca0d420a9a27ebbdc67e5be2a2d11b099d434b
SHA-1: 23de8dbffa0b0ce3caad60e6732bbf11f85ea482
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, 11:01 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: 6381da7928adf07b6a587072291bc416