According to code discovered in the most recent iOS 16.4 beta, Apple is continuing to enhance the Rapid Security Response (RSR) function that is integrated into iOS 16, iPadOS 16, and macOS Sierra.
In iOS 16.4 beta 3, a new Rapid Security Response code adds language regarding applications that could not be compatible with security updates. "Due to incompatibility with the most recent iOS rapid security response, some apps may abruptly close. This might be fixed by removing the security response, "reads the text from Apple.
There are also rollback alerts that can let users know if there's an issue with an RSR release. Users may encounter the text "Possible iOS Security Response Problem" in the future.
Apple has published multiple Rapid Security Response patches, with the first having come out in November. All of these updates have so far only been accessible to iPhone and iPad users who are using beta versions, and they appear to have been given as a test.
Apple looks to be still working on perfecting the RSR process, and it does not look like any of the releases have contained security fixes as of yet, based on Apple's security support document. There are no RSR releases included in this document, which lists only updates that have vulnerabilities fixed.
As no RSRs have yet been made available to the general public, it is also possible that Apple is not yet prepared to use the option as a bridge between software upgrades.
Rapid Security Response updates, announced as part of iOS 16, iPadOS 16, and macOS Sierra, are designed to enable Apple to offer security updates to users without a full iOS update. As the iOS 16.4 code shows, Quick Security Responses can be easily added and rolled back if necessary.
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