iPadOS 11.2.1 (build 15C153) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2017-12-13T18:05:00Z. The update package is 327.31 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: 112636e5b3b53c0ed8567717fb5f29208b0804b3.zip.