iPadOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2019-04-22T17:08:09Z. The update package is 287.82 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: 24d51f1c8737604a19d64215781aebb3634088f7.zip.