iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2017-10-23T17:03:48Z. The update package is 1.08 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 15805e1907ed1690f758d88386fd24279a0c23b9.zip.