iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2019-04-29T17:35:34Z. The update package is 88.81 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: 622b35fba90250bedeb55abb2c36b30087ca4be7.zip.