iOS 13.6 (build 17G5045c) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2020-06-09T17:28:25Z. The update package is 321.02 MB. This is a delta (partial) update that requires 13.5.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4ab02ee7b1a5bfd69794714f1a9ffb4575daa071.zip.