iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2017-10-23T17:04:06Z. The update package is 1.07 GB. This is a delta (partial) update that requires 10.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1c25c607fee849d404d56c55d6626f47955ffa1d.zip.