iPadOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2019-05-10T17:08:31Z. The update package is 371.93 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: 88b7dff33695273072e5ee4a9ac0e04bf0dfa779.zip.