iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2019-04-29T17:35:40Z. The update package is 94.96 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: 098e191a44466060a7cfb452921a97448961e957.zip.