iOS 9.9.13.3.1 (build 17D6050) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2020-01-28T18:27:16Z. The update package is 2.99 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: ab7eef610571a3e3b137828ef1f09d2918bb7c1b.zip.