iOS 9.9.16.3.1 (build 20D67) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2023-02-13T18:24:43Z. The update package is 4.19 GB. This is a delta (partial) update that requires 11.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e1945d208cc60996f10d531d05a80f1c2f4f28b0.zip.