mavericks_round_iconApple today seeded build 13D17 of OS X 10.9.3 to developers, one week after releasing the first OS X 10.9.3 beta, build 13D12. The beta is available through the Software Update mechanism in the Mac App Store as well as through the Mac Dev Center.

Apple is currently asking developers to focus on Graphics Drivers and Audio. As was discovered last week, 10.9.3 adds new support for 4K displays, offering "Retina" resolutions that improve readability along with support for 60Hz output from the Retina MacBook Pro.

Top Rated Comments

soundguyami Avatar
soundguyami
155 months ago
Hey macrumors, you stole my thread (again):

https://forums.macrumors.com/showthread.php?t=1716301

You might take note that MacRumors actually has useful information in it.
Score: 14 Votes (Like | Disagree)
nsayer Avatar
nsayer
155 months ago
Do NDA's mean nothing anymore. Seriously if you are part of the program and you post here you are in violation of your NDA.

There is no other mechanism available to me to get support.

The seed discussion area is broken.
I can't take the machine to the genius bar because it's running a seed.
I can't run the feedback assistant because the machine is bricked.

WTF else can I do?!

If Apple wants to get mad at me for posting here, then that's fine with me. They've seriously screwed the pooch and I have no other options.
Score: 5 Votes (Like | Disagree)
wermy Avatar
wermy
155 months ago
The beta also includes a 4K display option for 60Ghz output from the Retina MacBook Pro.

60Ghz huh? That's pretty good. ;)
Score: 5 Votes (Like | Disagree)
nsayer Avatar
nsayer
155 months ago
Not to rebut everything you said above but you are incorrect. I will not disclose which points. I am not trying to be rude or pick a fight you are just not correct. With that being said. Go into recovery mode and if you are part of the seed the new seed will automatically download, the recovery partition I am sure is intact.
So far as I am aware, there is no newer seed. It would download the same one, which I have no particular reason to believe will resolve the WindowServer's assertion failure.

Your assertion that I am incorrect with no supporting evidence has no more value than simply saying "neener neener."
Score: 4 Votes (Like | Disagree)
nsayer Avatar
nsayer
155 months ago
I think your "Name," says it all.

My username is first initial, last name. It's been that for 30 years.

The reason I can't rebut your specific issues is the fact I won't violate any agreement I am currently under. Every negative assertion is clearly in conflict with what I know to be true. So take what you posted and each individual assertion reverse it and boom, there you have it.

You could have been helpful, but you've been so much more.
Score: 3 Votes (Like | Disagree)
Steve121178 Avatar
Steve121178
155 months ago
At the time I posted there was nothing else here about it.

So information I provided was useful.

I didn't know how long it would take for a news story to go up here about it.

Who cares? MacRumors actually provided people with relevant information.
Score: 3 Votes (Like | Disagree)
Read All Comments

Popular Stories

Aston Martin CarPlay Ultra Screen

Apple's CarPlay Ultra to Expand to These Vehicle Brands Later This Year

Sunday February 1, 2026 10:08 am PST by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly nine months later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. In his Powe...
Read Full Article • 88 comments
Apple Logo Black

Apple's Next Launch is 'Imminent'

Sunday February 1, 2026 12:31 pm PST by
The calendar has turned to February, and a new report indicates that Apple's next product launch is "imminent," in the form of new MacBook Pro models. "All signs point to an imminent launch of next-generation MacBook Pros that retain the current form factor but deliver faster chips," Bloomberg's Mark Gurman said on Sunday. "I'm told the new models — code-named J714 and J716 — are slated...
Read Full Article
Apple MacBook Pro M4 hero

New MacBook Pros Reportedly Launching Alongside macOS 26.3

Sunday February 1, 2026 5:42 am PST by
Apple is planning to launch new MacBook Pro models with M5 Pro and M5 Max chips alongside macOS 26.3, according to Bloomberg's Mark Gurman. "Apple's faster MacBook Pros are planned for the macOS 26.3 release cycle," wrote Gurman, in his Power On newsletter today. "I'm told the new models — code-named J714 and J716 — are slated for the macOS 26.3 software cycle, which runs from...
Read Full Article • 137 comments
iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
We are still waiting for the iOS 26.3 Release Candidate to come out, so the first iOS 26.4 beta is likely still at least a week or two away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
Read Full Article • 25 comments
14 inch MacBook Pro Keyboard

Apple Changes How You Order a Mac

Saturday January 31, 2026 10:51 am PST by
Apple recently updated its online store with a new ordering process for Macs, including the MacBook Air, MacBook Pro, iMac, Mac mini, Mac Studio, and Mac Pro. There used to be a handful of standard configurations available for each Mac, but now you must configure a Mac entirely from scratch on a feature-by-feature basis. In other words, ordering a new Mac now works much like ordering an...
Read Full Article • 127 comments