iPadOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2018-09-12T19:06:03Z. The update package is 1.24 GB. This is a delta (partial) update that requires 11.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c6066743b31b58bc97ceddf694541bde79473226.zip.