iOS 16.6.1 (build 20G81) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2023-09-18T17:20:28Z. The update package is 3.6 GB. This is a delta (partial) update that requires 14.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 18c4a30da7c03f573644ece4a3cc74da87935229.zip.