iPadOS 12.0 (build 16A5339e) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-07-30T17:09:19Z. The update package is 1.15 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: 4689a7738183dd4150a9ea48058fcbd2c948eeb9.zip.