iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2017-10-23T17:04:11Z. The update package is 30.3 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f83e11db5fc7902e108eea8a5754aafb8134340e.zip.