iOS 9.9.12.3.1 (build 16F203) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2019-05-24T17:59:52Z. The update package is 2.5 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: f86eceb3c38618f61c382aa447b12821bb4c03fd.zip.