iOS 9.9.12.3 (build 16F5156a) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2019-05-10T17:09:42Z. 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: f51f18e60256c58e6162096ae961c2ee9d85d6e1.zip.