iPadOS 9.9.11.4 (build 15F5037c) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-04-02T17:06:24Z. The update package is 1.73 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: 804cdc43f5429851e3ba5599841b1f84b3073407.zip.