iOS 9.9.11.2.5 (build 15D5049a) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2018-01-03T18:15:57Z. The update package is 1.72 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: 93fec4ac0a277747756bc90a1d85392575f7681f.zip.