iOS 9.9.12.3 (build 16F5155a) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2019-05-07T17:04:22Z. The update package is 2.15 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: dbef6def4fe5e305cae52628a6d6ae85bbddb656.zip.