iPadOS 9.9.12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-05-10T17:08:34Z. The update package is 2.09 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1ce941048f9f17289cf0abfba6427d4a800e8ff3.zip.