iPadOS 9.3.5 (build 13G36) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2016-08-25T16:53:18Z. The update package is 269.12 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7aa74fc7b49527a78b3e202617cf6583f0333fa9.zip.