iPadOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2019-05-10T17:08:14Z. The update package is 348.29 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: 1e73e2992834b2f3316ca1b0b1188f84c9b3f9d9.zip.