iOS 9.9.11.4.1 (build 15G77) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-07-09T17:09:29Z. The update package is 1.42 GB. This is a delta (partial) update that requires 9.3.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2a970c40465c8bbda9ebe9e0e2ee20581d5558cb.zip.