iOS 9.9.15.3.1 (build 19D52) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2022-02-10T18:14:52Z. The update package is 4.29 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: 6824f2ce4d6f4363e825831377d57fbfe324d53d.zip.