iOS 9.9.13.3.1 (build 17D50) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2020-01-28T18:27:56Z. The update package is 2.79 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: 21a2e90b085362ea8dc19ac0b9a40d61a26dbf75.zip.