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OS X Mavericks v10.9.3 Update released today

The OS X Mavericks v10.9.3 Update is recommended for all OS X Mavericks users.

Updating your system

  1. You should back up your system before installation. To do this you can use Time Machine.
  2. Do not interrupt the installation process once you have started to update your system.
  3. You may experience unexpected results if you have third-party system software modifications installed, or if you’ve modified the operating system through other means.
  4. Choose Apple menu () > Software Update to check for the latest Apple software using the Mac App Store, including this update.
  5. Other software updates available for your computer may appear, which you should install. Note that an update’s size may vary from computer to computer when installed using Software Update. Also, some updates must be installed prior to others.

You can also download the manual update installer. This is a useful option when you need to update multiple computers, but only want to download the update once. Standalone installers are available from Apple Support Downloads.

About the update

The OS X Mavericks 10.9.3 Update is recommended for all Mavericks users. It improves the stability, compatibility, and security of your Mac.

This update:

  • Improves 4K display support on Mac Pro (Late 2013) and MacBook Pro with 15-inch Retina Display (Late 2013)
  • Adds the ability to sync contacts and calendars between a Mac and iOS device using a USB connection
  • Improves the reliability of VPN connections using IPsec
  • Resolves an issue that prevented Font Book from installing PostScript Type 1 fonts
  • Improves reliability of copying, editing and inspecting permissions of files on an SMB file server
  • Improves reliability of network home directories
  • Improves stability when installing configuration profiles
  • Improves login speed for users in Active Directory groups
  • Includes Safari 7.0.3

For detailed information about the security content of this update, see Apple security updates.

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