iPadOS 9.3.5 (build 13G36) is an official Apple over-the-air update for the iPad 2 (WiFi), released on 2016-08-25T16:53:07Z. The update package is 759.6 MB. This is a delta (partial) update that requires 8.3 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 1a31d90897b4be60da5e227b4ca4919a072699aa.zip.