iPadOS 9.9.11.2.6 (build 15D6100) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2018-02-19T21:08:41Z. 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: 2632319e92e02f4469869d09fc2e78bbb07d63ef.zip.