Apple Releases Rapid Security Response Update for iOS 16.4 Beta Users - MacRumors
Skip to Content

Apple Releases Rapid Security Response Update for iOS 16.4 Beta Users

by

Apple today released a Rapid Security Response update that is available for those running the iOS 16.4 beta, marking the launch of the third RSR update since the feature was introduced in iOS 16.

apple rapid security response
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.

iOS Security Response 16.4 (a) 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.

Once the Rapid Security Response update is installed, iOS 16.4 users will see an updated version of iOS 16.4 (a), and tapping on the version in the About section of Settings will display information about the installed iOS version and the Rapid Security Response update. Those who want to disable Rapid Security Response updates can do so by following our how to.

Related Forum: iOS 16

Popular Stories

Dynamic Island iPhone 18 Pro Feature

11 Reasons to Wait for the iPhone 18 Pro

Monday May 11, 2026 9:01 am PDT by
We're only four months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a sea change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year, adopting a...
Read Full Article • 40 comments
iOS 26

iOS 26.5 Features: Everything New in iOS 26.5

Monday May 11, 2026 5:09 pm PDT by
Apple released iOS 26.5 after a few months of beta testing, and while it doesn't have the Siri features we were hoping for since those are being held until iOS 27, there are a handful of useful changes worth knowing about. Subscribe to the MacRumors YouTube channel for more videos. End-to-End Encryption for RCS Support for end-to-end encryption (E2EE) for RCS messages between iPhone and...
Read Full Article • 65 comments
General Apps Reddit Feature

Reddit Starts Blocking Mobile Website, Pushing Users to App Instead

Monday May 11, 2026 6:10 am PDT by
Social network Reddit recently began blocking mobile visitors to its website while pushing them to download the official Reddit app, and it's fair to say that the move is not going down well with users. If you visit reddit.com on your iPhone today, you may see a new popup that can't be dismissed, asking you to "get the app to keep using Reddit." A Reddit spokesperson told Ars Technica...
Read Full Article • 125 comments

Top Rated Comments

redbeard331 Avatar
redbeard331
42 months ago
Wish we knew what it was for.
Score: 12 Votes (Like | Disagree)
nikhsub1 Avatar
nikhsub1
42 months ago
Man I love this! Much better than rolling out the whole OS...
Score: 8 Votes (Like | Disagree)
L
Lounge vibes 05
42 months ago

To me, this is really no different. If they still require a restart then it’s the exact same procedure with a different name. Download thing, agree to install thing, restart. No thanks.

A truly streamlined rapid update should work like updating apps through the App Store - I press a button and it does its thing in the background with zero disruption to my use of the device, no restart required, no password required, no nothing.
Well, this requires one simple reboot, which takes like 30 seconds.
A regular update requires a file install that’s anywhere from 200MB to 5+GB, a long preparing and verification process, and usually three reboots where the update actually indexes and installs.
That takes closer to 20 minutes to a half hour to even longer.
Score: 6 Votes (Like | Disagree)
L
Ladon08
42 months ago

To me, this is really no different. If they still require a restart then it’s the exact same procedure with a different name. Download thing, agree to install thing, restart. No thanks.

A truly streamlined rapid update should work like updating apps through the App Store - I press a button and it does its thing in the background with zero disruption to my use of the device, no restart required, no password required, no nothing.
I mean, considering their infrequency, I wouldn’t let it bother you too much.
Score: 6 Votes (Like | Disagree)
TracesOfArsenic Avatar
TracesOfArsenic
42 months ago

Rapidy fixing bugs. That's a new one.
They had to fix this bug to allow some bigger ones to get through for the public release.
Score: 4 Votes (Like | Disagree)
L
lindros2
42 months ago
just got this a moment ago...
Score: 4 Votes (Like | Disagree)
Read All Comments