iPadOS 11.2.2 (build 15C202) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-01-08T18:13:21Z. The update package is 359.24 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: 33b7bb2fc7d76f95df520ba994dbc68a117b1bf1.zip.