iPadOS 12.1 (build 16B5089b) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-10-22T17:01:28Z. The update package is 355.2 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d24e13dd8d01655977a359eaeac3cf6e3d7b641b.zip.