iPadOS 11.2.1 (build 15C153) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2017-12-13T18:05:59Z. The update package is 1.1 GB. This is a delta (partial) update that requires 10.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c2cccc561b4022ea31d3c6293c6eb6e4c1628aa4.zip.