Apple Seeds Fourth Beta of macOS Sierra 10.12.5 to Developers [Update: Public Beta Too]

Apple today seeded the fourth beta of an upcoming macOS Sierra 10.12.5 update to developers, one week after seeding the third beta and one month after releasing macOS Sierra 10.12.4, which introduced Night Shift for the Mac.

The fourth beta of macOS Sierra 10.12.5 can be downloaded through the Apple Developer Center or through the Software Update mechanism in the Mac App Store.

macOS 10
According to the release notes accompanying the beta, the update "improves the stability, compatibility, and security of your Mac."

Apple's release notes don't often provide a lot of insight into what's included in new beta software, so we don't know what features or bug fixes might be included in the 10.12.5 update.

No notable changes or major bug fixes were discovered in the first three betas, but should anything pop up in the fourth macOS Sierra 10.12.5 beta, we'll update this post.

Update: Apple has also provided the fourth beta of macOS Sierra 10.12.5 to public beta testers.

Related Forum: macOS Sierra

Popular Stories

iPhone SE 4 Vertical Camera Feature

iPhone SE 4 Rumored to Use Same Rear Chassis as iPhone 16

Friday July 19, 2024 7:16 am PDT by
Apple will adopt the same rear chassis manufacturing process for the iPhone SE 4 that it is using for the upcoming standard iPhone 16, claims a new rumor coming out of China. According to the Weibo-based leaker "Fixed Focus Digital," the backplate manufacturing process for the iPhone SE 4 is "exactly the same" as the standard model in Apple's upcoming iPhone 16 lineup, which is expected to...
iPhone 16 Pro Sizes Feature

iPhone 16 Series Is Just Two Months Away: Everything We Know

Monday July 15, 2024 4:44 am PDT by
Apple typically releases its new iPhone series around mid-September, which means we are about two months out from the launch of the iPhone 16. Like the iPhone 15 series, this year's lineup is expected to stick with four models – iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max – although there are plenty of design differences and new features to take into account. To bring ...
iphone 14 lineup

Cellebrite Unable to Unlock iPhones on iOS 17.4 or Later, Leak Reveals

Thursday July 18, 2024 4:18 am PDT by
Israel-based mobile forensics company Cellebrite is unable to unlock iPhones running iOS 17.4 or later, according to leaked documents verified by 404 Media. The documents provide a rare glimpse into the capabilities of the company's mobile forensics tools and highlight the ongoing security improvements in Apple's latest devices. The leaked "Cellebrite iOS Support Matrix" obtained by 404 Media...
tinypod apple watch

TinyPod Turns Your Apple Watch Into an iPod

Wednesday July 17, 2024 3:18 pm PDT by
If you have an old Apple Watch and you're not sure what to do with it, a new product called TinyPod might be the answer. Priced at $79, the TinyPod is a silicone case with a built-in scroll wheel that houses the Apple Watch chassis. When an Apple Watch is placed inside the TinyPod, the click wheel on the case is able to be used to scroll through the Apple Watch interface. The feature works...
bsod

Crowdstrike Says Global IT Outage Impacting Windows PCs, But Mac and Linux Hosts Not Affected

Friday July 19, 2024 3:12 am PDT by
A widespread system failure is currently affecting numerous Windows devices globally, causing critical boot failures across various industries, including banks, rail networks, airlines, retailers, broadcasters, healthcare, and many more sectors. The issue, manifesting as a Blue Screen of Death (BSOD), is preventing computers from starting up properly and forcing them into continuous recovery...
Apple Watch Series 9

2024 Apple Watch Lineup: Key Changes We're Expecting

Tuesday July 16, 2024 7:59 am PDT by
Apple is seemingly planning a rework of the Apple Watch lineup for 2024, according to a range of reports from over the past year. Here's everything we know so far. Apple is expected to continue to offer three different Apple Watch models in five casing sizes, but the various display sizes will allegedly grow by up to 12% and the casings will get taller. Based on all of the latest rumors,...

Top Rated Comments

Vashetti Avatar
95 months ago
Dear Apple, How do I remove the constantlyupdate-all-the-time PITA feature? Thanks.
By not applying for the beta programme.

Apt username, too.
Score: 14 Votes (Like | Disagree)
TMRJIJ Avatar
95 months ago
Another suppressive release. They killed Handbrake. What next?
[LIST=1]
* It's a Beta. There are no 'releases' of macOS 10.12.5 yet.
* HandBrake works fine for me and apparently other people in the forum
* It's a Developers Preview and something tells me that you are not much of a developer if you feel you needed to throw a fit that an app is not working on your primary Mac (of which you shouldn't be installing this preview on)

EDIT: BTW you probably shouldn't try the public beta either
Score: 7 Votes (Like | Disagree)
chriscrowlee Avatar
95 months ago
Another suppressive release. They killed Handbrake. What next?
You obviously don't understand what Beta means. And if it angers you that third party software doesn't work, revert back to the public final release version available and NEVER install a Beta again. How do you think software developers release software? They get the Beta from Apple, then design their app to work with the OS. How would you expect a developer to develop software on an OS that they don't have access to? Get real.

Anyhow, it's obviously an isolated issue, as my Handbrake works just fine, and you're the ONLY one on here that's say it doesn't work. Every other post says it works fine.

If you can't live without ANY single app working on your computer, DO NOT INSTALL BETAS.
Score: 5 Votes (Like | Disagree)
kissmo Avatar
95 months ago
I think Mac os 10.13 will be called Mac OS Beta
Score: 5 Votes (Like | Disagree)
justperry Avatar
95 months ago
I think Mac os 10.13 will be called Mac OS Beta
And why is that?
Sierra was one hell of a stable OS when released, the next one might be the same or better.
Score: 3 Votes (Like | Disagree)
kevo0822 Avatar
95 months ago
And why is that?
Sierra was one hell of a stable OS when released, the next one might be the same or better.
If you relied on Preview for viewing/annotating PDFs, Sierra was the most UNUSABLE OS release from Apple in a long long time.
Score: 2 Votes (Like | Disagree)