iOS 9.9.13.3 (build 17C5053a) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2019-12-05T21:11:39Z. The update package is 2.8 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: 45bffd7eb0a60aaa3d775eea31f6045dc9a893ae.zip.