iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2019-04-29T17:35:30Z. The update package is 87.57 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 22eab4f75548f4be12739bbe6a5844f1280f52f7.zip.