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 90.02 MB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 599b52bdd2153f84545713475e52ebc012e37cd2.zip.