iPadOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPad Air 3 (WiFi), released on 2019-05-07T17:03:31Z. The update package is 75.77 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: de10c485dd64e76bb5e0d015717bcc30064ebb05.zip.