iOS 9.3.4 (build 13G35) is an official Apple over-the-air update for the iPhone 4s, released on 2016-08-04T17:07:43Z. The update package is 199.04 MB. This is a delta (partial) update that requires 9.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 063a1c881320264040dbed89511cb9450b550925.zip.