iPadOS 9.9.12.1.4 (build 16D57) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2019-02-07T18:06:36Z. The update package is 1.99 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: 56f94c02f03094a8488273fc7aa2a52df11839aa.zip.