iPadOS 12.0 (build 16A5354b) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2018-08-13T17:03:27Z. The update package is 1.17 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 52e13f50ff5553bafd0f585cf8cb1b9df5cb0d50.zip.