A software program replace referred to as 16.4.1 (a) was pushed to iOS customers on Could 1, though some iPhone house owners began to obtain the alert on solely Could 4.
Whereas Fast Safety Response (RSR) sounds an ominous identify, it merely refers to security-led software program releases that arrive between software program updates that additionally alter and add machine options.
Apple describes them as “a brand new sort of software program launch” that delivers “essential safety enhancements between software program updates”.
That is the form of replace we’re more likely to see if a serious new safety risk seems that Apple must sort out shortly, although.
“They might even be used to mitigate some safety points extra shortly, akin to points which may have been exploited or reported to exist “within the wild”,” Apple mentioned on its help pages.
How Apple’s Fast Safety Response updates work
These updates can be delivered to supported iPhones, iPad and Macs so long as they’re already operating the most recent model of the software program. If not, there can be an extra replace queued forward of the RSR one.
It’s not clear if this primary RSR replace was a response to an evolving safety risk, or only a check of this new fashion of replace. 16.4.1 (a) was not accompanied by conventional launch notes, which usually dig into what a software program replace provides and adjustments.
Nonetheless, their security-focused fashion means these updates mustn’t trigger issues in how your iPhone, iPad or Mac runs — such issues can come up with regular updates.
Apple says these RSR updates can be utilized mechanically by default, however you may alter your iPhone’s replace settings in Settings > Basic > Software program Replace > Automated Updates.
When the Safety Responses & System Recordsdata possibility is enabled, the updates will set up mechanically. You could be prompted to restart your Apple machine as soon as this has occurred.
You gained’t miss out on something if you don’t set up the updates, as their content material can be wound into a typical replace additional down the road. Nonetheless, rejecting them could put your Apple machine at larger threat of sure safety threats.