iOS 10.3.4 (build 14G61) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2019-07-22T17:07:55Z. The update package is 137.29 MB. This is a delta (partial) update that requires 10.3.1 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 716406ffa26c805728d3078b56129ac07fc6516c.zip.