iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad 6 (Cellular), released on 2019-04-29T17:35:53Z. The update package is 400.94 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: e7897dafd6d5bea916a2f595f2a56a3c3e2db374.zip.