iPadOS 9.3.5 (build 13G36) is an official Apple over-the-air update for the iPad 2 (CDMA), released on 2016-08-25T16:53:08Z. The update package is 821.76 MB. This is a delta (partial) update that requires 8.1.1 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 8cf839795d93d0a30757e7ff7da5337b9a52f91b.zip.