Apple Releases macOS Big Sur 11.2.1 With Fix for MacBook Pro Charging Issue [Updated]

Apple today released macOS Big Sur 11.2.1, the third update to the macOS Big Sur operating system that launched in November. macOS Big Sur‌ 11.2.1 comes a little over a week after the release of macOS 11.2.

First Look Big Sur Feature2
The new ‌‌‌macOS Big Sur‌‌ 11.2.1‌ update can be downloaded for free on all eligible Macs using the Software Update section of System Preferences.

According to Apple's release notes, macOS Big Sur 11.2.1 addresses an issue that could prevent the battery from charging in some 2016 and 2017 MacBook Pro models. In an Apple support document released alongside the update, Apple says that a small number of customers with 2016 and 2017 MacBook Pro models have experienced a bug that causes their batteries not to charge past 1 percent, an issue macOS Big Sur 11.2.1 fixes.

Affected customers who ran into the problem with an earlier version of macOS Big Sur will also see a "Service Recommended" notice and will need to contact Apple for a free battery replacement.

Update: macOS 11.2.1 also fixes a significant security vulnerability.

Top Rated Comments

Stuipdboy1000 Avatar
18 months ago
https://support.apple.com/en-gb/HT212177

Contains security fixes too, including the Sudo bug.
Score: 17 Votes (Like | Disagree)
zorinlynx Avatar
18 months ago

Apple should really rework the update process.

2.5 GB Download for each of my Macs und installing the update takes forever... That is one of the things Linux is much better at.
If you're concerned about data usage, turn on content caching on one of your Macs. This is located in System Preferences -> Sharing, at the bottom of the list. Preferably do this on your Mac that has the most disk space, a desktop like an iMac or Mac Mini that is on most of the time. Adjust the slider to the amount of disk space you feel comfortable using for this. I have mine at 50GB which is enough for most things.

Then only the first Mac has to download the update. The remaining machines will grab the update from the Content Caching Mac. Devices will find the content caching Mac automatically; you don't have to do anything but make sure it's turned on before you update the first machine.

This will cache pretty much everything, too. iOS updates, and also iCloud content. Like, if you take a photo on your iPhone and it uploads to iCloud, the Caching machine will cache that and when iCloud Photos syncs on your other devices it pulls from the cache. It's a pretty sweet feature.
Score: 12 Votes (Like | Disagree)
andycyphert Avatar
18 months ago
They’re going to need a lot more than that to fix Bug Sur....
Score: 11 Votes (Like | Disagree)
Soba Avatar
18 months ago

weird bug affecting specific machines

Gonna hold off since not impacted

edit: fixes sudo bug, I stand corrected.
This is one of the things that really annoys me about Apple's patches: The release notes are virtually nonexistent.

I get that there are certain fixes Apple might not want to call attention to, but their software updates for most of the last 10 years have come with only the barest release notes. This Big Sur release fixes the sudo bug, and judging from other posts, it also tweaked drivers, Bluetooth, and other things.

This really should be presented to the user in the UI; telling the user that a specific problem is fixed while not mentioning fixes for other known problems leads the user to think (quite reasonably) that nothing was fixed except for what was explicitly mentioned.

Apple used to publish very detailed release notes for most of their OS updates. I write technical docs for a living these days, so I'd love to see that kind of attention to detail from them, again.
Score: 7 Votes (Like | Disagree)
robotica Avatar
18 months ago
2.43GB on my 2018 MM seems large for such a specific fix.
Score: 7 Votes (Like | Disagree)
zorinlynx Avatar
18 months ago
List of updated files on the system partition:

https://zorin.org/share/update-changed.txt

sudo, the mentioned battery/power stuff, Bluetooth, Intel graphics drivers (as mentioned), HID drivers, and a few other random odds and ends.

I'm surprised to see so many changes to Bluetooth-related files; maybe they're still working on fixing those issues.
Score: 7 Votes (Like | Disagree)

Related Stories

macOS Big Sur Feature Blue

Apple Seeds Fourth Beta of macOS Big Sur 11.5 to Developers

Tuesday June 29, 2021 10:14 am PDT by
Apple today seeded the fourth beta of an upcoming macOS Big Sur 11.5 update to developers for testing purposes, with the new beta coming two weeks after the release of the third macOS Big Sur 11.5 beta. Developers can download the ‌‌‌‌macOS Big Sur‌‌‌‌ 11.5 beta using the Software Update mechanism in System Preferences after installing the proper profile from the Apple...
macOS Big Sur Feature Blue

Apple Seeds Seventh Beta of macOS Big Sur 11.3 to Developers

Thursday April 8, 2021 10:07 am PDT by
Apple today seeded the seventh beta of an upcoming macOS Big Sur 11.3 update to developers for testing purposes, with the new beta coming one week after the launch of the sixth beta and more than a month after the release of macOS Big Sur 11.2, a bug fix update. Developers can download the ‌‌macOS Big Sur‌‌ 11.3 beta using the Software Update mechanism in System Preferences after...
macOS Big Sur Feature Blue

Apple Seeds Second Release Candidate Version of macOS Big Sur 11.5 to Developers

Monday July 19, 2021 10:40 am PDT by
Apple today seeded a second release candidate version of an upcoming macOS Big Sur 11.5 update to developers for testing purposes, with the new update coming one week after the release of the first RC version. Developers can download the ‌‌‌‌macOS Big Sur‌‌‌‌ 11.5 beta using the Software Update mechanism in System Preferences after installing the proper profile from the Apple ...
macOS Big Sur Feature Triad

Apple Releases macOS Big Sur 11.6 With Security Fixes

Monday September 13, 2021 10:20 am PDT by
Apple today released macOS Big Sur 11.6, the sixth major update to the macOS Big Sur operating system that first launched in November 2020. macOS Big Sur 11.6 comes a month after the release of macOS Big Sur 11.5.2, a bug fix update. The new ‌‌‌‌‌‌macOS Big Sur‌‌‌‌‌ 11.6 update can be downloaded all eligible Macs using the Software Update section of System Preferences. ...
macOS Big Sur Feature Orange

Apple Releases macOS Big Sur 11.5.2 With Bug Fixes

Wednesday August 11, 2021 10:17 am PDT by
Apple has released a new macOS Big Sur 11.5.2 update, delivering unspecified bug fixes for Mac users running the latest major operating system version. The update comes a little over two weeks after Apple released macOS 11.5.1. The new ‌‌‌‌‌‌‌macOS Big Sur‌‌‌‌‌‌ 11.5.2 update can be downloaded for free on all eligible Macs using the Software Update section of System ...
macOS Big Sur Feature Blue

Apple Seeds Release Candidate Version of macOS Big Sur 11.5 to Developers

Tuesday July 13, 2021 10:19 am PDT by
Apple today seeded the release candidate version of an upcoming macOS Big Sur 11.5 update to developers for testing purposes, with the new beta coming one week after the release of the fifth macOS Big Sur 11.5 beta. Developers can download the ‌‌‌‌macOS Big Sur‌‌‌‌ 11.5 beta using the Software Update mechanism in System Preferences after installing the proper profile from the ...
macOS Big Sur Feature Triad

Apple Seeds Third Beta of macOS Big Sur 11.4 to Developers

Monday May 10, 2021 10:14 am PDT by
Apple today seeded the third beta of an upcoming macOS Big Sur 11.4 update to developers for testing purposes, with the new beta coming two weeks after the release of the second macOS Big Sur 11.4 beta. Developers can download the ‌‌‌macOS Big Sur‌‌‌ 11.4 beta using the Software Update mechanism in System Preferences after installing the proper profile from the Apple Developer...
macOS Big Sur Feature Blue

Apple Seeds Third Beta of macOS Big Sur 11.5 to Developers

Monday June 14, 2021 10:04 am PDT by
Apple today seeded the third beta of an upcoming macOS Big Sur 11.5 update to developers for testing purposes, with the new beta coming two weeks after the release of the second macOS Big Sur 11.5 beta. Developers can download the ‌‌‌‌macOS Big Sur‌‌‌‌ 11.5 beta using the Software Update mechanism in System Preferences after installing the proper profile from the Apple...

Popular Stories

2022 back to school apple

Apple Launches 2022 Back to School Offer: Up to $150 Gift Card With Mac or iPad

Friday June 24, 2022 5:08 am PDT by
Apple today launched its annual "Back to School" promotion for college/university students in the United States and Canada. This year's promotion offers a free Apple gift card with the purchase of an eligible Mac or iPad, rather than free AirPods like last year. Apple is also offering students 20% off AppleCare+ plans during the promotion. Apple is offering a $150 gift card with the purchase ...
widgets ios 16 feature

Gurman: iPhone 14 Pro to Feature Always-On Display Showing iOS 16's New Lock Screen Widgets

Sunday June 26, 2022 7:36 am PDT by
iPhone 14 Pro models are widely expected to feature always-on displays that allow users to view glanceable information without having to tap to wake the screen. In the latest edition of his Power On newsletter for Bloomberg, Mark Gurman said the feature will include support for iOS 16's new Lock screen widgets for weather, fitness, and more. "Like the Apple Watch, the iPhone 14 Pro will be...
m2 mac mini screen feature

Gurman: Apple Planning M2 Pro Mac Mini, New Apple TV With A14 Chip, Revamped HomePod With S8 Chip, and More

Sunday June 26, 2022 6:31 am PDT by
In the latest edition of his Power On newsletter for Bloomberg, Mark Gurman outlined additional M2 Macs on Apple's product roadmap, including new Mac mini models with M2 and M2 Pro chips, new 14-inch and 16-inch MacBook Pro models with M2 Pro and M2 Max chips, and a new Mac Pro tower with M2 Ultra and "M2 Extreme" chips. Following the M2 series of Macs, Gurman said the first M3 series of...
13 inch macbook pro m2 mock feature 2

Base 13-Inch MacBook Pro With M2 Chip Has Significantly Slower SSD Speeds

Sunday June 26, 2022 2:52 pm PDT by
Following the launch of Apple's new 13-inch MacBook Pro with the M2 chip, it has been discovered that the $1,299 base model with 256GB of storage has significantly slower SSD read/write speeds compared to the equivalent previous-generation model. YouTube channels such as Max Tech and Created Tech tested the 256GB model with Blackmagic's Disk Speed Test app and found that the SSD's read and...
M2 Pro and Max Feature

Apple's Upcoming M2 Pro Chip for High-End MacBook Pro and Mac Mini Will Reportedly Be 3nm

Monday June 27, 2022 7:31 am PDT by
TSMC will manufacture Apple's upcoming "M2 Pro" and "M3" chips based on its 3nm process, according to Taiwanese industry publication DigiTimes. "Apple reportedly has booked TSMC capacity for its upcoming 3nm M3 and M2 Pro processors," said DigiTimes, in a report focused on competition between chipmakers like TSMC and Samsung to secure 3nm chip orders. As expected, the report said TSMC will...
airpods pro 2 1

AirPods Pro 2 Said to Feature Upgraded H1 Chip, Find My, Heart Rate Detection, USB-C and More

Friday June 24, 2022 9:48 am PDT by
The next-generation AirPods Pro could come with a long list of new features that include heart rate detection, the ability to function as a hearing aid, and a USB-C port according to a report from 52Audio. The site claims that it has received new information on the AirPods Pro 2, and it has used that information to provide some renders on what the earbuds might look like. Design wise, there...
tesla carplay hack

Tesla Apple CarPlay Hack Updated to Work With Any Tesla Model

Monday June 27, 2022 3:38 am PDT by
Polish developer Michał Gapiński has released a new and improved version of his "Tesla Android Project" which brings Apple's CarPlay experience to more Tesla vehicles than ever before. According to Gapiński, version 2022.25.1 provides "100% functional CarPlay integration for any Tesla," and comes with several new features and bug fixes. The project now supports DRM video playback so that...