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 198.99 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fdc6b5726cfa6161ebe1536d9afb33a27e2e7108.zip.