iPadOS 9.3.6 (build 13G37) is an official Apple over-the-air update for the iPad 3 (CDMA), released on 2019-07-22T17:06:35Z. The update package is 198.34 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 0370dab33b81ab4ad4e12494c242f5e92accf340.zip.