iPadOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-09-12T19:05:46Z. The update package is 1.26 GB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 26334691290bf705e0994ed64a357a39d7269213.zip.