iPadOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2019-05-07T17:03:46Z. The update package is 63.32 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: da85eb5c2fc8e5b2973add42f31cdc9c31111b75.zip.