iOS 13.5.5 (build 17G5035d) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2020-06-01T18:09:11Z. The update package is 265.4 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: fab03e4a8421a3c7d21b9a31b6ceb5cf63bb914f.zip.