iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2017-10-23T17:03:50Z. The update package is 163.6 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e5cb3f898eba8a4dfc636baaefca67ae651e592b.zip.