iOS 9.9.17.3.1 (build 21D61) is an official Apple over-the-air update for the iPhone XR, released on 2024-02-08T18:32:55Z. The update package is 5.41 GB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e04ee451944c0bcf1ca249d6e65ea8de398d7f2e.zip.