iPadOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2019-01-22T18:05:10Z. The update package is 1.58 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 61224789e4900d80f938c7bc08ababc2e84981f1.zip.