FIRMWARE DETAILS

iOS 16.6.1

Build: 20G81Sep 7, 2023Restore IPSW

Stable

View details

Filename: iPhone13,4_16.6.1_20G81_Restore.ipsw
File size: 6.80 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: e675ef6ffd7bd426e735902a8f90ad5c7e85dddba588d44118dfbf8f3cdcbb1f
SHA-1: bad9b0a69464feb0e77b75412bbaaefc814bf57f
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 12 Pro Max iPhone13,4IPSW.me public API retrieval · Oct 23, 2026, 2:35 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: e8ffe2a75fa6bc79812b997bc1f69880