iOS 9.9.12.1.3 (build 16D5032a) is an official Apple over-the-air update for the iPhone XS, released on 2018-12-19T18:06:58Z. The update package is 2.64 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: 043b41757e71e0ab105795e88b5dcbd11202b43b.zip.