iOS 9.9.13.3.1 (build 17D50) is an official Apple over-the-air update for the iPhone SE, released on 2020-01-28T18:27:55Z. The update package is 2.64 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: 20fd7c433b390ca64cd3f9ac07e5a4721bbba967.zip.