How to download and install iOS 11.2.1 on your iPhone or iPadiOS 11.2.1 is out, restoring remote access for HomeKit shared users . Update now!
How to install iOS 11.2.1 using Software Update on your iPhone or iPad
How to install iOS 11.2.1 using iTunes on your Mac or Windows PC
How to install iOS 11.2.1 over the developer or public beta
What's new in iOS
What's new in iOS 11.2.1
iOS 11.2.1 reenables remote access for HomeKit shared users. Apple disabled the feature while it repaired a HomeKit vulnerability that gave unauthorized parties access to various HomeKit accessories, including locks and lights.
How to install iOS 11.2.1 using Software Update on your iPhone or iPad
The easiest way for most people to download iOS 11.2.1 is over-the-air, directly on their device. It's fast, it's efficient, and it's simple to do.
Make sure you have a recent iCloud backup.
Launch Settings from your Home screen.
Tap on General.
Tap on Software Update.
Tap on Download and Install.
Enter your Passcode, if prompted.
Tap Agree to the Terms and Conditions...
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How to download and install iOS 11.2.1 on your iPhone or iPad
