Apple earlier today released new Rapid Security Response updates for iOS 16.5.1, iPadOS 16.5.1, and macOS Ventura 13.4.1 users, but Apple has pulled the software, likely due to an issue that caused certain websites not to work after the RSRs were installed.
According to reports on the MacRumors forums, Facebook, Instagram, WhatsApp, Zoom, and other websites started giving a warning about not being supported on the Safari browser following the Rapid Security Response updates.
The iOS 16.5.1, iPadOS 16.5.1, and macOS Ventura 13.4.1 Rapid Security Response updates fixed a WebKit vulnerability that Apple says may have been actively exploited. Unfortunately, it appears that the updates changed the Safari user agent to include an (a), leading some websites to break.
Apple will likely re-release the RSRs when the issue has been addressed.
Apple has pulled the Rapid Security Responses released earlier today.
There are reports on the MacRumors forums that it broke certain apps such as Facebook, Instagram, Zoom to name a few.
— Aaron (@aaronp613) July 11, 2023
Those who have already installed the update can downgrade on iOS by going to Settings > General > About and tapping on iOS Version. From there tap on Remove Security Update. On the Mac, updates can be removed by following our how to.