iPadOS 9.3.5 (build 13G36) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2016-08-25T16:53:23Z. The update package is 1.12 GB. This is a delta (partial) update that requires 8.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 40cad0d7e49dc3125ec16452b8ea5f80b12927c4.zip.