iOS 9.9.11.4.1 (build 15G6077) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-07-09T17:06:05Z. 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: ceda37bfe4139190d3d60bc94816c47e68748662.zip.