iPadOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad 6 (WiFi), released on 2019-05-10T17:09:13Z. The update package is 400.97 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: c113a228cc540497dc844ec7bc1ca59b9bc2b4db.zip.