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 112.61 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: 344a8d852fadee477930efc13057f3b68ca7addc.zip.