iPadOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2019-04-08T17:04:19Z. The update package is 369.09 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: 77ce47b583cfe6a9570f8137a323fb9e7018eadf.zip.