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 132.3 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9521f2d4b1b0db63f0a11081292372bdfa4b787b.zip.