iOS 13.5.5 (build 17G5035d) is an official Apple over-the-air update for the iPhone 6s, released on 2020-06-01T18:09:24Z. The update package is 203.44 MB. This is a delta (partial) update that requires 13.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0650706a4838ddb7f9ad4fb97346b366c5139e5c.zip.