iPadOS 9.9.13.5.1 (build 17F80) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2020-06-01T17:10:50Z. 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: aa05f20ac699aa63caf828b3b67fd4463e568ffb.zip.