iOS 9.9.12.3 (build 16F156) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2019-05-13T17:07:59Z. The update package is 2.48 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: 87089f60168b76b509f85aeefdf433ae63474b68.zip.