iOS 9.9.11.2.5 (build 15D5049a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-01-03T18:15:56Z. 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: 98122f43d686577ca32cbbc2e3be809b11ed30cb.zip.