Apple Releases OS X 10.9.3 With Enhanced Support for 4K Displays, Syncing Improvements
Apple today released OS X 10.9.3, after two months of developer testing. The last 10.9.3 developer beta, build 13D61, was released just over a week ago.
The update, which is recommended for all Mavericks users, improves 4K display support on the late 2013 Mac Pro and 15-inch MacBook Pro with Retina display. According to the release notes, it also re-adds the ability to sync contacts and calendars between Macs and iOS devices using a USB connection and it improves the reliability of VPN connections using IPSec.
Today's update also includes Safari 7.0.3, and Apple has released iTunes 11.2 as well.
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
- Includes Safari 7.0.3
For detailed information about this update, please visit: http://support.apple.com/kb/HT6228
For detailed information about the security content of this update, please visit: http://support.apple.com/kb/HT1222
First outlined after the initial 10.9.3 beta, the improved 4K support enables HiDPI Retina scaling on 4K displays for the 2013 Mac Pro and Retina MacBook Pro with DisplayPort 1.2, which improves the size and readability of text and other on-screen elements. 10.9.3 also includes 60Hz 4K output for the 2013 Retina Macbook Pros and the higher refresh rates will improve response times for smoother game playing, video editing, and more.
OS X 10.9.3 can be downloaded through the software update function in the Mac App Store or through the following links:
- OS X Mavericks Update v10.9.3 (461.7 MB)
- OS X Mavericks Update v10.9.3 (Combo) (947.2 MB)
Popular Stories
Apple today announced a "special Apple Experience" in New York, London, and Shanghai, taking place on March 4, 2026 at 9:00am ET.
Apple invited select members of the media to the event in three major cities around the world. It is simply described as a "special Apple Experience," and there is no further information about what it may entail. The invitation features a 3D Apple logo design...
Apple is looking for a "breakthrough" with its push into wearable AI devices, including an "AirTag-sized pendant," according to Bloomberg's Mark Gurman.
In a report this week, he said the pendant is reminiscent of the failed Humane AI Pin, but it would be an iPhone accessory rather than a standalone product.
The pendant would feature an "always-on" camera and a microphone for Siri voice...
Back at WWDC 2025, Apple revealed that it was planning to allow CarPlay users to watch video via AirPlay in their vehicles while they are not driving, and the first beta of iOS 26.4 suggests the feature may be nearing availability.
There are several new references to CarPlay video streaming functionality within the iOS 26.4 beta's source code. The feature is not yet visible to users, but...
New trade-in data indicates that Apple's iPhone 17 Pro Max has rapidly become the single most traded-in smartphone.
According to a new report from SellCell, Apple's latest flagship iPhone has quickly risen to the top of the independent trade-in market, accounting for 11.5% of all devices appearing in the top-20 trade-in rankings just months after release. The analysis is based on SellCell...
Apple on Monday invited selected journalists and content creators to a "special Apple Experience" on Wednesday, March 4 in New York, London, and Shanghai.
At an Apple Experience, attendees are typically given the opportunity to try out Apple's latest hardware or software. Following the launch of Apple Creator Studio last month, for example, some content creators attended an Apple Experience...
