iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2018-12-05T18:07:26Z. The update package is 1.22 GB. This is a delta (partial) update that requires 11.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7902d2973f65e87cf9df470c31f2d12eae5265f1.zip.