iOS 9.3.4 (build 13G35) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-08-04T17:08:18Z. The update package is 330.78 MB. This is a delta (partial) update that requires 9.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c8d59b132f110330d48ab1c545431b2c8a40017e.zip.