iPadOS 9.9.13.6.1 (build 17G80) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2020-08-12T20:32:39Z. The update package is 2.66 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: f6697f914d403c4f9d8437f168ecea1937603b62.zip.