iPadOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2019-04-22T17:08:06Z. The update package is 272.41 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: 2c1f5be871e2dda257bca9b8a2e36e34046277fb.zip.