iPadOS 9.3.5 (build 13G36) is an official Apple over-the-air update for the iPad 2 (Mid 2012), released on 2016-08-25T16:53:09Z. The update package is 256.03 MB. This is a delta (partial) update that requires 9.0 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 5ff92d2dba3da60ce43a58b2769e769cfb4c420d.zip.