iPadOS 12.0 (build 16A5308e) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-06-19T17:04:20Z. The update package is 528.44 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6f9eef626b715cab0e336b41defa85e514211654.zip.