iPadOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2019-05-07T17:03:40Z. The update package is 370.67 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: 24acf3c6ca2bdd8f550ca41db97ead4216e37dd0.zip.