iPadOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2019-05-10T17:08:29Z. The update package is 371.95 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: ba8fcc7daace2193843e04cc7511b13a5cb09f3f.zip.