iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2019-04-29T17:35:32Z. The update package is 371.91 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6e5b158bb32852c6199f9c376c3117df7643ad8a.zip.