Apple Releases iOS 11.2.1 Update With HomeKit Remote Sharing Fix

Apple today released iOS 11.2.1, the eighth official update to the iOS 11 operating system. iOS 11.2.1 comes a week and a half after the release of iOS 11.2, the second major update to the iOS 11 operating system, which brought Apple Pay Cash, faster 7.5W wireless charging, and a long list of bug fixes.

The iOS 11.2.1 update can be downloaded for free on all eligible devices over-the-air in the Settings app. To access the update, go to Settings --> General --> Software Update.

homekit
The iOS 11.2.1 update addresses bugs and issues that have been discovered since the release of iOS 11.2.

According to Apple's release notes, the update re-enables remote access for shared users of the Home app. Apple broke remote access for shared users when implementing a fix for a major HomeKit vulnerability last week.

The HomeKit bug allowed unauthorized access to HomeKit accessories that included smart locks, and it was fixed server-side by Apple after it was made public. To address the issue immediately, Apple had to disable remote access for shared users, which the company said it would re-enable through an iOS update this week.

Following today's update, the HomeKit vulnerability is fully patched and remote access for shared users has been reinstated.

For more on iOS 11 and its updates, make sure to check out our iOS 11 roundup.

Related Forum: iOS 11

Popular Stories

iphone 16 display

iPhone 17's Scratch Resistant Anti-Reflective Display Coating Canceled

Monday April 28, 2025 12:48 pm PDT by
Apple may have canceled the super scratch resistant anti-reflective display coating that it planned to use for the iPhone 17 Pro models, according to a source with reliable information that spoke to MacRumors. Last spring, Weibo leaker Instant Digital suggested Apple was working on a new anti-reflective display layer that was more scratch resistant than the Ceramic Shield. We haven't heard...
apple watch ultra yellow

What's Next for the Apple Watch Ultra 3 and Apple Watch SE 3

Friday April 25, 2025 2:44 pm PDT by
This week marks the 10th anniversary of the Apple Watch, which launched on April 24, 2015. Yesterday, we recapped features rumored for the Apple Watch Series 11, but since 2015, the Apple Watch has also branched out into the Apple Watch Ultra and the Apple Watch SE, so we thought we'd take a look at what's next for those product lines, too. 2025 Apple Watch Ultra 3 Apple didn't update the...
iPhone 17 Air Pastel Feature

iPhone 17 Reaches Key Milestone Ahead of Mass Production

Monday April 28, 2025 8:44 am PDT by
Apple has completed Engineering Validation Testing (EVT) for at least one iPhone 17 model, according to a paywalled preview of an upcoming DigiTimes report. iPhone 17 Air mockup based on rumored design The EVT stage involves Apple testing iPhone 17 prototypes to ensure the hardware works as expected. There are still DVT (Design Validation Test) and PVT (Production Validation Test) stages to...
Beyond iPhone 13 Better Blue

20th Anniversary iPhone Likely to Be Made in China Due to 'Extraordinarily Complex' Design

Monday April 28, 2025 4:29 am PDT by
Apple will likely manufacture its 20th anniversary iPhone models in China, despite broader efforts to shift production to India, according to Bloomberg's Mark Gurman. In 2027, Apple is planning a "major shake-up" for the iPhone lineup to mark two decades since the original model launched. Gurman's previous reporting indicates the company will introduce a foldable iPhone alongside a "bold"...
iPhone 17 Air Pastel Feature

iPhone 17 Air Launching Later This Year With These 16 New Features

Thursday April 24, 2025 8:24 am PDT by
While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the ultra-thin device. Overall, the iPhone 17 Air sounds like a mixed bag. While the device is expected to have an impressively thin and light design, rumors indicate it will have some compromises compared to iPhone 17 Pro models, including only a single rear camera, a...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching Later This Year With These 13 New Features

Wednesday April 23, 2025 8:31 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
iphone 17 air iphone 16 pro

iPhone 17 Air USB-C Port May Have This Unusual Design Quirk

Wednesday April 30, 2025 3:59 am PDT by
Apple is preparing to launch a dramatically thinner iPhone this September, and if recent leaks are anything to go by, the so-called iPhone 17 Air could boast one of the most radical design shifts in recent years. iPhone 17 Air dummy model alongside iPhone 16 Pro (credit: AppleTrack) At just 5.5mm thick (excluding a slightly raised camera bump), the 6.6-inch iPhone 17 Air is expected to become ...

Top Rated Comments

.starscream Avatar
96 months ago
Feels like I‘ve been updating my phone more than actually using it.
Score: 32 Votes (Like | Disagree)
scrapesleon Avatar
96 months ago
What this one gonna break now?
Score: 20 Votes (Like | Disagree)
deanthedev Avatar
96 months ago
You're brave to be updating first :)
I always update immediately. Have been for years and never have issues.
Score: 18 Votes (Like | Disagree)
thadoggfather Avatar
96 months ago
I always update immediately. Have been for years and never have issues.
Years, and never.

Two words that don't fit in the context here

You are a fortunate unobservant user.

If bugs didn't exist, Updates wouldn't be issued (notwithstanding major new releases to appease Wall Street and shoehorn into new hardware releases)

IMO people would be fine with same iOS refined on new hardware. And release the new stuff when it's polished to a T. Instead of being beta testers every fall

10.5/12.9 were excellent examples of this. iOS 11 has been really
good on my 12.9 2017, but Shipping version iOS 10.3 was soooooo polished out the gate with those new hardware releases. I was impressed
Score: 11 Votes (Like | Disagree)
deanthedev Avatar
96 months ago
Years, and never.

Two words that don't fit in the context here

You are a fortunate unobservant user.

If bugs didn't exist, Updates wouldn't be issued (notwithstanding major new releases to appease Wall Street and shoehorn into new hardware releases)

IMO people would be fine with same iOS refined on new hardware. And release the new stuff when it's polished to a T. Instead of being beta testers every fall

10.5/12.9 were excellent examples of this. iOS 11 has been really
good on my 12.9 2017, but Shipping version iOS 10.3 was soooooo polished out the gate with those new hardware releases. I was impressed
Sorry, they do go together. I have stated in the past I’ve seen little things here and there on occasion. Maybe when I rotate my iPhone it takes longer to recognize. A piece of text is misaligned. There’s a slight stutter or pause when launching an App. These are not what I call “issues”, as I experience them in every single technology product I’ve ever used (my cars infotainment systems, TVs, cable boxes, digital cameras, iPhones, iPads, Macs, PCs - literally everything that has a processor and runs software has the occasional glitch).

What I haven’t seen is a failure of any of the Apps I rely on, loss of data or anything that affects the ability of me to use my device the way I always have. Those are what I’d consider “issues” as they detract greatly from how your device operates.

What I find funny is a bug that affects a small number of users, yet almost everyone here at MR claims to have seen it. Statistically that’s just not possible. However, me claiming I haven’t had any issues is absolutely believable because I’m in the majority of satisfied iOS users, not the vocal minority claims by their devices are “completely unusable”.
[doublepost=1513190025][/doublepost]
And they are fortunate unobservant users as aforementioned.
Absolutely false.
Score: 10 Votes (Like | Disagree)
Mike MA Avatar
96 months ago
Eight updates in under three month...wonder where we will be next September.
Score: 9 Votes (Like | Disagree)