iOS 9.9.12.0 (build 16A5366a) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-08-31T17:07:31Z. The update package is 2.33 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: 6ee56c5884e9cc4da781668b62f4ad85b1fcc4d1.zip.