iPadOS 12.3 (build 16F5117h) is an official Apple over-the-air update for the iPad 6 (WiFi), released on 2019-03-27T17:06:12Z. The update package is 340.28 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: 9ec0a60180452bd957c6f0d26363baa83c50b69d.zip.