Apple Seeds OS X Mavericks 10.9.5 Build 13F24 to Developers - MacRumors
Skip to Content

Apple Seeds OS X Mavericks 10.9.5 Build 13F24 to Developers

by

Apple today seeded Mavericks 10.9.5 build 13F24 to developers, just over a week after seeding the fourth OS X 10.9.5 beta, build 13F18, and more than a month after releasing OS X 10.9.4 to the public.

The beta is available through the Software Update mechanism in the Mac App Store and through the Mac Developer Center.

build13f24
It is unclear what improvements the 10.9.5 update will bring to Mavericks, but it is likely to include bug fixes and stability enhancements. Apple is asking developers to focus on USB, USB Smart Cards, Graphics, Safari, Thunderbolt, and Gatekeeper.

Along with working on improvements to Mavericks, Apple is also beta testing OS X Yosemite, which is due to be released in the fall. The last Mavericks update, 10.9.4, added several Wi-Fi fixes and improved wake from sleep reliability.

Top Rated Comments

crjackson2134 Avatar
crjackson2134
153 months ago
I'm really looking forward release. I just hope it will fix USB "External Disk was not Ejected Properly" error.
Score: 5 Votes (Like | Disagree)
groovyd Avatar
groovyd
153 months ago
must be depressing being on the team of elves who fix last year's broken gifts.
Score: 4 Votes (Like | Disagree)
Detektiv-Pinky Avatar
Detektiv-Pinky
153 months ago
You do now, but not in about two months.

<snip>

Anyone still on the BEST Mac OS X Snow Leopard..?:rolleyes:

I just upgraded from Snow Leopards a few months ago. I had no use of any of the features of Mavericks. As it stands I spend several days disabling the most annoying things like AutoSave, Versions and Message Center.

It was the simple fact that Apple stopped to issue security updates for the OS that forced me to switch. I am not looking forward to switch OS again soon...
Score: 4 Votes (Like | Disagree)
E
Eithanius
153 months ago
i'm dreadfully looking forward to this update, as well. i hope "stability fixes" include NVRM/Read Error/GPUPanic Kernel Panic issues associated with Mid-2010 MBP's w/ the Nvidia GT330m.

I will be holding my breath.

Nope... that is hardware issue...
Score: 4 Votes (Like | Disagree)
crjackson2134 Avatar
crjackson2134
153 months ago
Nope, that requires the user (you) to stop pulling the plug on the External Disk without first unmounting the volume from the file system. :p
You need to do a little more research. Many! People are having this problem. Also, don't Assume so much. My drives are NEVER unplugged.

It's a common problem.
Score: 3 Votes (Like | Disagree)
OldMacUser Avatar
OldMacUser
153 months ago
Nope, that requires the user (you) to stop pulling the plug on the External Disk without first unmounting the volume from the file system. :p

I have this error occurring repeatedly with a USB3 disk enclosure and it is not because of "pulling the plug" - the drive will randomly disconnect when attempting to write data to the disk.

Randomly in the sense that it can write 2GB of data, then disconnect, OR on another attempt, it will write about 500MB of data then disconnect.
Score: 3 Votes (Like | Disagree)
Read All Comments

Popular Stories

iOS 27 on iPhone 17 1

iOS 27 Will Add These New Features to Your iPhone

Saturday May 2, 2026 8:43 am PDT by
Apple is expected to unveil iOS 27 during its WWDC 2026 keynote on June 8, and there are already many rumored features and changes for iPhones. The first developer beta of iOS 27 will likely be available immediately following the keynote, and a public beta typically follows in July. Following beta testing, the software update should be released to all users with a compatible iPhone in...
Read Full Article • 93 comments
Apple Event Logo

Apple Just Released a New Accessory

Monday May 4, 2026 8:13 am PDT by
Apple today released a new Pride Edition Sport Loop for the Apple Watch. The band features a rainbow design with 11 colors of woven nylon yarns. The new Pride Edition Sport Loop is available to order now on Apple.com and in the Apple Store app in 40mm, 42mm, and 46mm sizes, and it will be available at Apple Store locations starting later this week. In the U.S., the band costs $49. There...
Read Full Article
Apple Announces 2026 Pride Band Watch Face and iPhone Wallpaper Article 2

iOS 26.5 Coming Soon With These New Features

Monday May 4, 2026 8:40 am PDT by
iOS 26.5 is expected to be released next week, following more than a month of beta testing. The update is relatively minor, but there are a couple of new features and changes across the operating system that we have recapped below. iOS 26.5 lays the groundwork for end-to-end encryption for RCS in the Messages app and ads in the Apple Maps app, and it will include a new Pride wallpaper and a...
Read Full Article • 45 comments