iPadOS 11.1 (build 15B5086a) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2017-10-16T17:03:59Z. The update package is 110.22 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: cc19274a66015f5935243c33ee03bdd736c0d0ee.zip.