iPadOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPad mini 2 (Cellular), released on 2018-10-30T17:04:57Z. The update package is 1.23 GB. This is a delta (partial) update that requires 11.0.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f427e4615756b057abce981e5273ff3c36521116.zip.