iOS 9.9.11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-11-09T18:09:15Z. The update package is 1.58 GB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 59aab7c6fd19636141c2b6294b1be1502e7f00c9.zip.