OS X Mavericks 10.9.3 (Build 13D43) Seeded

Apple seeded a sixth test build of OS X 10.9.3 (13D43) to registered Mac developers, available through their Software Update mechanism in the Mac App Store, as well as through the Mac Dev Center.

Focus Areas

– Graphics Drivers
– Audio
– Safari
– Contacts and Calendar sync over USB in iTunes
– Mail

Everyone else who is interested in testing OS X 10.9.3 (13D43) without being a registered Mac software developer can change their App Store URL by entering the following terminal command (all on one line):

sudo /usr/sbin/softwareupdate –set-catalog https://swscan.apple.com/content/catalogs/others/index-10.9seed-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz

Tip: You can also open the App Store from a terminal window with:

open macappstore://showUpdatesPage


You can restore to the original Apple catalog by resetting the override URL with help of the following terminal command:

sudo /usr/sbin/softwareupdate --clear-catalog

After that the CatalogURL property will be removed from /Library/Preferences/com.apple.SoftwareUpdate.plist and when everything went fine, you’ll see this text: softwareupdate: Changed catalog to Apple production
Back to the factory original (production) catalog.

Legal Notices

Use of this confidential, pre-release software is subject to the Software License Agreement for Apple Confidential OS X Pre-Release Seed Updates presented upon installation of the OS X Software Update Seed Configuration Utility. The original Software License Agreement that accompanied commercially-available versions of the software being updated does not apply to these pre-release seed updates.


This update won’t show up under Updates in the App Store when you are still using the 10.9.2 Golden Master (build 13A598) or already have OS X 10.9.3 (Build 13D28) installed. There’s an additional check for build 13C64, which was first released to Apple employees and a day later to the public.


In this build AGDC (Apple Graphics Device Policy) has improved, and as a result my DVI monitor (with my IGPU only setup) works without any modifications to AppleIntelFramebuffer.kext whatsoever, though I had to change:



What I did was that I changed the factory “Config1” to “none” (Config1 unloads GFX1) like all other models under ConfigMap (iMac14,1/MacBookPro11,1/iMac14,2/MacBookAir6,1/MacBookPro9,1/iMac14,3/MacBookAir6,2/Mac-81E3E92DD6088272/MacBookPro10,1/MacPro4,1/MacPro5,1/MacPro3,1/MacPro6,1/iMac13,3) Without this mod only the DisplayPort monitor connector worked.

Did you catch the Mac-81E3E92DD6088272 in that list? That is a new board-id (for OS X 10.9.3, not this specific DP) and thus Apple could be planning to release a new Mac with OS X 10.9.3 installed on it. What I can tell you is that this specific board-id is not another Mac Pro, and the most likely candidate is a brand new Mac mini. Or is that just my imagination. Hoping for a new Mac mini?

Edit: We know now that this board-id (Mac-81E3E92DD6088272) is for the 21-inch mid-2014 iMac (iMac14,4).

Also. A quick look at /S*/L*/E*/IOPlatformPluginFamily.kext/C*/P*/X86PlatformPlugin.kext/C*/Resources revealed that all plist are unchanged.

Well. This has to be it for now folks as I need to go – sanding a 30 meter wall and paint the darn thing for a second time. Have fun!

I forgot to mention that I found a new GUID. One used to store/retrieve the DisplayBackgroundColor (options/):


There might be more. Will keep searching for new stuff.

Update 2:
Worked around a stupid wordpress.com code block issue.


6 thoughts on “OS X Mavericks 10.9.3 (Build 13D43) Seeded

  1. Pingback: USB stutter and random hangs | Pike's Universum

  2. Pingback: OS X Mavericks 10.9.3 (Build 13D55) Seeded | Pike's Universum

  3. Pingback: CatalogURL’s | Pike's Universum

  4. Pingback: Patching AppleGraphicsDevicePolicy.kext | Pike's Universum

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