OS X 10.8.4 Build 12E55 Seeded to Developers

As noted by 9to5Mac, Apple today seeded build 12E55 of OS X 10.8.4 to developers. The release comes nine days after the previous build 12E52 and marks the eighth beta iteration of OS X 10.8.4.

12e55
As with previous beta releases, Apple continues to ask developers to focus on Wi-Fi, Graphics Drivers, and Safari.

The update is available through the software update tool in the Mac App Store and Apple's Developer Page.

Top Rated Comments

Parasprite

172 months ago

Screw it. Waiting for 10.9

I made it to 10.8.3, I can wait for anything.

Score: 17 Votes (Like | Disagree)

ArtOfWarfare

172 months ago

My Macbook Pro has been flashing MAJOR graphics artifacts since upgrading to 10.8.3 (this did not happen in 10.8.2). When the glitches become severe enough, the system freezes up completely, with a hard restart being the only recovery.

I'm hoping that 10.8.4 will fix this issue!

Here are some videos of my problem:

http://youtu.be/YGae1ams0i8
http://youtu.be/tqO30pxdSOs
http://youtu.be/OIwSkIJduRc

Here is an image of my problem:

Image (https://discussions.apple.com/servlet/JiveServlet/downloadImage/2-21996729-250883/450-336/IMG_3595+copy.JPG)

You're holding it wrong.

Score: 13 Votes (Like | Disagree)

TheGreenBastard

172 months ago

Screw it. Waiting for 10.9

Score: 13 Votes (Like | Disagree)

w0lf

172 months ago

Re: This shutdown bug.

Can I ask why, in this day and age, why on earth people are doing it so often?!?

My macs never get restarted apart from Software updates or rebooting into Windows. MBP hasn't been restarted in 30 days and MP two weeks!!

If it is done on purpose (which it is) then it isn't a bug...

Because we masturbate to watching our macbooks restart.

Why the hell do people keep asking this? It's a bug and it should be fixed that's all.

Score: 6 Votes (Like | Disagree)

cmChimera

172 months ago

Then who do you blame?

I don't blame anyone. I like Mountain Lion. I think Lion could've used more polish before release, but I think Mountain Lion was a return to form. I have very few complaints about 10.8.

Score: 6 Votes (Like | Disagree)

designgeek

172 months ago

They really seem to be taking their time with this one. I hope the get most of the crap ironed out. OS X gets buggier and buggier with each new release.

Score: 6 Votes (Like | Disagree)

Read All Comments

Popular Stories

Apple Working on All-New Operating System

Wednesday July 29, 2026 11:39 am PDT by Joe Rossignol

Apple is developing an all-new operating system that is essentially a mix of tvOS, watchOS, and iOS, according to Bloomberg's Mark Gurman. In a report this week, he said the operating system will feature a grid of icons, widgets, and apps, along with customizable clock faces. The new software platform is intended for Apple's long-rumored smart home hub. With built-in facial recognition,...

Apple Made Its Second-Biggest Acquisition Ever This Year

Wednesday July 29, 2026 12:03 pm PDT by Joe Rossignol

Apple this year acquired Israeli startup Q.ai for close to $2 billion, according to the Financial Times. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone maker Beats in 2014. This is also the largest known Apple acquisition since the company purchased Intel's smartphone modem business and patents for $1 billion in 2019. Q.ai...

iPhone 18 Pro: Twelve Changes Coming to Apple's Next Flagship

Thursday July 30, 2026 3:43 am PDT by Tim Hardwick

We're less than two months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a dramatic change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year,...

• 31 comments

OS X 10.8.4 Build 12E55 Seeded to Developers

Top Rated Comments

Popular Stories

Apple Working on All-New Operating System

Apple Made Its Second-Biggest Acquisition Ever This Year

iPhone 18 Pro: Twelve Changes Coming to Apple's Next Flagship

Next Article

Videos

Guides

Upcoming

Other Stories

🔗 Related Apple News & Rumors