iPadOS 12.0 (build 16A5288q) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2018-06-05T09:51:50Z. The update package is 1.14 GB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a8e1b05d7ccfea0252bc27b8a9e5303afd0b9ca4.zip.