iPadOS 12.1.3 (build 16D5032a) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-12-19T18:06:35Z. The update package is 215.92 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 40b35a67fcf393c9687124b6a4e5f76a499772b8.zip.