iOS 9.9.12.3 (build 16F156) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2019-05-13T17:08:02Z. 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: bfb0414ecb2eeb981da99b989d1d3c44d4caeaca.zip.