iPadOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2019-01-22T18:04:34Z. The update package is 1.23 GB. This is a delta (partial) update that requires 11.0.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 59bdd2a02bba99e57c37cb75a37a57d4a81dc1c8.zip.