Apple Seeds First iOS 10.2.1 and macOS Sierra 10.12.3 Betas to Public Beta Testers - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Seeds First iOS 10.2.1 and macOS Sierra 10.12.3 Betas to Public Beta Testers

Apple today seeded the first public betas of both iOS 10.2.1 and macOS Sierra 10.12.3 to public beta testers, one day after seeding the two new releases to developers and two weeks after releasing iOS 10.2 and macOS Sierra 10.12.2.

Beta testers who have signed up for Apple's beta testing program will receive the new iOS 10.2.1 beta update over-the-air after installing the proper certificate on their iOS device, and macOS Sierra 10.12.3 can be installed using the Software Update mechanism in the Mac App Store.

ios-10-2-1-beta
Those who want to be a part of Apple's beta testing program can sign up to participate through the beta testing website, which gives users access to both iOS and macOS Sierra betas. Betas are not stable and include many bugs, so they should be installed on a secondary device.

macos-10-12-3-beta
No major outward-facing changes were discovered in the developer betas of macOS Sierra 10.12.3 or iOS 10.2.1, suggesting they are both minor updates that focus on bug fixes and under-the-hood changes rather than major new features.

Related Forums: iOS 10, macOS Sierra

Popular Stories

Home Hub Command Center with Dome Base Feature

Apple Smart Home Hub to Feature iMac G4-Style Design

Wednesday September 30, 2026 4:36 am PDT by
Apple's long-rumored smart home hub will have an iMac G4-style design and a host of unique features, Bloomberg's Mark Gurman reports. The smart home hub is said to feature a square 6-inch display, with variants that can be placed on a countertop or mounted on a wall. It features a single FaceTime camera on the front, with microphones and speakers in its connected base. Gurman described the...
HomePod minis on gradient feature 1 1

Three New Apple Smart Home Products Coming on October 13

Wednesday September 30, 2026 4:04 am PDT by
Apple plans to introduce a series of new smart home products on Tuesday, October 13, according to Bloomberg's Mark Gurman. Apple reportedly plans to debut its long-awaited smart home hub device, a new HomePod mini, and a new Apple TV on the date. The new HomePod mini and Apple TV are set to retain their existing designs, but tout faster chips to support Siri AI. The new HomePod mini will...
Apple TV Sans Remote Feature

New Apple TV 4K Leaked

Friday September 25, 2026 8:16 am PDT by
MacRumors contributor Aaron Perris has uncovered an image file from Apple for an unreleased Apple TV 4K, suggesting that a new model will finally be released soon. The image is specifically for an "Apple TV 4K (4th generation)" model. Apple TV 4K (4th generation) image (on a gradient) The image reveals that the Apple TV will have the same external design as the current model, with all of its...

Top Rated Comments

loveios Avatar
128 months ago
Guys, Apple in iOS 10.2.1 beta 1 fixed the calendar spam issue, and iPhone 6S auto shutdown issue
Score: 4 Votes (Like | Disagree)
128 months ago
Starting with the iOS 10 and Sierra betas, bug reporting has been almost impossible. You can write a detailed report and then hit send, then wait for 20 minutes until it says it was unable to send the report and to try again. You then try again and again until it eventually suceeds or you just give up. When it does succeed, you can watch as new betas come and go and not a single one of your reports have been addressed. Perhaps new bugs appear, but the old ones remain (blatant, obvious ones that make you think Apple employees don't use their own software because how can they possibly not see those bugs). The overall effect is bugs accumulate and each beta is worse than the last.

After this happens for each and every piece of feedback you try to send, you start to question if you should even try to report bugs, until you eventually stop sending reports.
feedback app working fine here for me no problem submitting bug reports.
Score: 3 Votes (Like | Disagree)
128 months ago
I just deleted my Beta profile on my iPhone..... It's getting a little tedious to install a new beta every few days.
Score: 3 Votes (Like | Disagree)
128 months ago
Is anyone actually noticing an improvement in the final builds since Apple started such a wide and regular public beta testing? I'm certainly not. Makes me think people only download it so they can blog about it or.m show their friends they have it
Score: 3 Votes (Like | Disagree)
128 months ago
10.2.1, 10.12.3..... It's getting confusing.
Score: 3 Votes (Like | Disagree)
Mr. Dee Avatar
128 months ago
Welcome to Internet life. Remember the days, only time you would update your operating system happened only when you bought a new version?
Score: 3 Votes (Like | Disagree)
Latest Stories
iPhone 18 Pro Sales Jump in China Ahead of iPhone Duo Launch
iPhone 18 Pro Sales Jump in China Ahead of iPhone Duo Launch
19 minutes ago
Apple TV Still Down for Some Users Following Apple Services Outage
Apple TV Still Down for Some Users Following Apple Services Outage
1 hour ago
PSA: Apple Mail on Mac May Stop Syncing Microsoft 365 Accounts Today
PSA: Apple Mail on Mac May Stop Syncing Microsoft 365 Accounts Today
1 hour ago
Apple's Smart Home Hub: Everything We Know So Far
Apple's Smart Home Hub: Everything We Know So Far
12 hours ago
Apple's Home Hub Borrows From the iPhone Duo's StandBy Mode
Apple's Home Hub Borrows From the iPhone Duo's StandBy Mode
13 hours ago
Apple Invites App Updated With Three New Features
Apple Invites App Updated With Three New Features
17 hours ago
Apple Event on October 13?
Apple Event on October 13?
18 hours ago
Apple Watch SE 3 vs. Series 12 Buyer's Guide: Which Should You Buy?
Apple Watch SE 3 vs. Series 12 Buyer's Guide: Which Should You Buy?
20 hours ago
iPad Mini 8 to Offer These 10 New Features
iPad Mini 8 to Offer These 10 New Features
20 hours ago
DoorDash Unveils AI Food Ordering Through Apple's Messages App
DoorDash Unveils AI Food Ordering Through Apple's Messages App
22 hours ago
Amazon Takes Up to $150 Off Select M5 MacBook Air Models
Amazon Takes Up to $150 Off Select M5 MacBook Air Models
22 hours ago
Apple Still Plans to Release a New Full-Sized HomePod
Apple Still Plans to Release a New Full-Sized HomePod
23 hours ago
Apple Working to Expand HomeKit
Apple Working to Expand HomeKit
1 day ago
Apple Smart Home Hub to Feature iMac G4-Style Design
Apple Smart Home Hub to Feature iMac G4-Style Design
1 day ago
Three New Apple Smart Home Products Coming on October 13
Three New Apple Smart Home Products Coming on October 13
1 day ago
Apple Pay Now Available in India With Axis Bank Cards
Apple Pay Now Available in India With Axis Bank Cards
2 days ago
OpenAI Launches Always-On 'Dots' Agents to Rival Meta's Muse
OpenAI Launches Always-On 'Dots' Agents to Rival Meta's Muse
2 days ago
AirPods 5 Teardown: Batteries Removable, Case Still Tough
AirPods 5 Teardown: Batteries Removable, Case Still Tough
2 days ago
iPhone 18 Pro Owners Complain of Speaker Crackling or Popping
iPhone 18 Pro Owners Complain of Speaker Crackling or Popping
2 days ago
You Can 'Get Ready' for iPhone Duo Pre-Orders on October 12
You Can 'Get Ready' for iPhone Duo Pre-Orders on October 12
2 days ago
Apple Pay Reportedly Launching in India Today
Apple Pay Reportedly Launching in India Today
2 days ago
Apple Releases New AirPods Beta Firmware
Apple Releases New AirPods Beta Firmware
2 days ago
Apple Shares New Guide for Using iOS 27 Parental Controls
Apple Shares New Guide for Using iOS 27 Parental Controls
2 days ago
Apple Creator Studio and Final Cut Camera Get New Features
Apple Creator Studio and Final Cut Camera Get New Features
2 days ago
Apple Explains Why It Removed ICE Tracking Apps Last Year
Apple Explains Why It Removed ICE Tracking Apps Last Year
2 days ago
Amazon Expands $779.99 Apple Watch Ultra 4 Deal to More Models
Amazon Expands $779.99 Apple Watch Ultra 4 Deal to More Models
2 days ago
Switch Siri AI for ChatGPT on Your Mac
Switch Siri AI for ChatGPT on Your Mac
2 days ago
Apple Says Emergency SOS via Satellite Now Available in Norway
Apple Says Emergency SOS via Satellite Now Available in Norway
2 days ago
AppleCare Guide: Is it Worth Paying For?
AppleCare Guide: Is it Worth Paying For?
2 days ago
Apple Reportedly Planned to Replace 5,000 Support Employees With AI
Apple Reportedly Planned to Replace 5,000 Support Employees With AI
2 days ago

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors