iPadOS 9.9.13.5 (build 17F6075) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2020-05-18T17:18:35Z. The update package is 2.65 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: f7a43a820a5ac68d3b54881d756814a901b6293a.zip.