iPadOS 12.3 (build 16F5117h) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2019-03-27T17:05:47Z. The update package is 310.37 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: 47220a52989b43c5775a0118394bc63c413e313b.zip.