iOS 9.9.11.3 (build 15E6216) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-03-29T17:04:43Z. The update package is 1.8 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4103fabce72c167159ebb6e86b420f4bc6de93bb.zip.