iPadOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2019-05-07T17:03:42Z. The update package is 370.63 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: eb943d2a02dffe2e90557737b04b87e6c107d6ed.zip.