iPadOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2019-04-08T17:04:09Z. The update package is 293.08 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: a3a7f5b6b28c9b0e7c2bd0dbfa6fdc2216028e59.zip.