iOS 9.3.3 (build 13G34) is an official Apple over-the-air update for the iPhone 4s, released on 2016-07-18T17:55:11Z. The update package is 255.54 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f0250b138a6df475d5686bd3552d531185e18e3c.zip.