iOS 9.3.3 (build 13G21) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-06-06T16:47:13Z. The update package is 46.48 MB. This is a delta (partial) update that requires 9.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7c4a2c5baa4097715a23060acb0a0aa04932af1d.zip.