

IOS Security Response 16.4 (b) is available through the standard Software Update mechanism in the Settings app, but is a quick update, requiring just a couple of minutes to download the update and then a quick restart for the install process. The Rapid Security Response Update is designed to provide iOS 16.4 beta users with bug fixes without the need to install a full update, and this is likely a test update given the small file size. Apple today released a Rapid Security Response update that is available for those running the iOS 16.4 beta, marking the launch of the fourth RSR update since the feature was introduced in iOS 16.
