iPadOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-10-30T17:05:14Z. The update package is 1.6 GB. This is a delta (partial) update that requires 10.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8344bf499e6ad531f8ba3297d9077deef82c50b2.zip.