Apple’s iOS 11.2.1 update is a tiny maintenance release, but it could have a significant impact on your device’s performance. While many of you should install the iOS 11.2.1 update today, others might benefit from waiting a few more hours, a few more days or, in some cases, a more few weeks.
Many iPhone and iPad users have been dealing with iOS 11 problems and Apple’s latest update comes with bug fixes for lingering issues. Namely, a potential security issue with the HomeKit platform.
iOS 11.2.1 is a maintenance release which means it’s a small download for all iPhone, iPad, and iPod touch models. If you’re coming from iOS 11.2, your update is just a few megabytes. It’s just 68MB for the iPhone X and around the same for other iPhone models.
Your iOS 11.2.1 update will be even bigger if you skipped iOS 11.0, iOS 11.0.1, iOS 11.0.2, iOS 11.0.3, iOS 11.1, iOS 11.1.1, iOS 11.1.2, or iOS 11.2. The fixes and features from those updates are baked into your version of iOS 11.2.1.
iOS 11.2.1 Update: Should You Upgrade?
iOS 11.2.1 is a tiny update, but Apple’s maintenance upgrades can have tremendous impact on your device’s performance. Some of you could see a boost, some of you could see performance issues. The iOS 11.2.1 update fixes bugs, but it’s already causing problems for some iPhone and iPad users.
If iOS 11.2.1 starts causing problems on your device you can try dropping back down to iOS 11.1.1, iOS 11.1.2, or iOS 11.2. Unfortunately, Apple’s permanently closed off older versions of iOS and Apple’s decision to close off those updates puts an even greater importance on your move to iOS 11.2.1.
There are plenty of reasons to consider installing iOS 11.2.1 right now. That said, there are also some reasons why you might be better off holding out. Temporarily or permanently.
If you’re on the fence about upgrading your iPhone, iPad or iPod touch to the latest version of iOS, allow us to walk you through the best reasons to and not to install it right now.
Install iOS 11.2.1 If You Use HomeKit
Apple's iOS 11.2 update fixed several problems, but it also brought some problems of its own including a potentially nasty zero-day iOS HomeKit vulnerability.
The vulnerability, discovered by Tian Zhang, allowed for unauthorized control of HomeKit accessories including garage door openers and smart locks.
Last week, Apple rolled out a server-side fix, but the company's restored full functionality with the release of iOS 11.2.1.
If you use HomeKit and value your home security, you'll want to install the iOS 11.2.1 update right away.