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 820.85 MB. This is a delta (partial) update that requires 8.1.3 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 0909efb0777a18915080ee339357a1e684e36354.zip.