iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2019-04-29T17:35:23Z. The update package is 86.15 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: 0ddd1067156ba06f23d532c90d90cf5d042a1ea6.zip.