iPadOS 12.1.3 (build 16D5032a) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2018-12-19T18:06:37Z. The update package is 225.42 MB. This is a delta (partial) update that requires 12.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 649e3ba53aab6f16fad12c64a1cbb85248df8949.zip.