Apple Releases Mac OS X 10.6.3 and Security Update 2010-002 - MacRumors
Skip to Content

Apple Releases Mac OS X 10.6.3 and Security Update 2010-002

123055 software update 10

Apple today released Mac OS X 10.6.3, the third maintenance update for Snow Leopard, via Software Update and the company's software downloads page. The update offers several hundred fixes implemented since the release of Mac OS X 10.6.2 last November and an interim security update issued in January.

The 10.6.3 Update is recommended for all users running Mac OS X Snow Leopard and includes general operating system fixes that enhance the stability, compatibility, and security of your Mac, including fixes that:

- improve the reliability and compatibility of QuickTime X
- address compatibility issues with OpenGL-based applications
- address an issue that causes background message colors to display incorrectly in Mail
- resolve an issue that prevented files with the # or & characters in their names from opening in Rosetta applications
- resolve an issue that prevented files from copying to Windows file servers
- improve performance of Logic Pro 9 and Main Stage 2 when running in 64-bit mode
- improve sleep and wake reliability when using Bonjour wake on demand
- address a color issue in iMovie with HD content
- improve printing reliability
- resolve issues with recurring events in iCal when connected to an Exchange server
- improve the reliability of 3rd party USB input devices
- fix glowing, stuck, or dark pixels when viewing video from the iMac (Late 2009) built-in iSight camera

Full details on the update are available in Apple's associated support document.

Developer builds of Mac OS X 10.6.3 were seeded with increasingly frequency in recent weeks, with the most recent, Build 10D573, appearing just last Wednesday.

- Mac OS X v10.6.3 Update (719.23 MB)
- Mac OS X v10.6.3 Update (Combo) (784 MB)
- Mac OS X Server v10.6.3 Update (831.31 MB)
- Mac OS X Server v10.6.3 Update (Combo) (897.32 MB)

Apple has also released Security Update 2010-002 for users on Mac OS X 10.5 Leopard.

- Security Update 2010-002 (Leopard-Client) (78.39 MB)
- Security Update 2010-002 (Leopard-Server) (361.40 MB)

Popular Stories

iOS 26

iOS 26.4 Adds Two New Features to CarPlay

Tuesday March 24, 2026 1:55 pm PDT by
iOS 26.4 was released today, and it includes a couple of new features for CarPlay: an Ambient Music widget and support for voice-based chatbot apps. To update your iPhone 11 or newer to iOS 26.4, open the Settings app and tap on General → Software Update. CarPlay will automatically offer the new features so long as the iPhone connected to your vehicle is running iOS 26.4 or later....
Apple Business hero

Apple Unveils 'Apple Business' All-in-One Platform

Tuesday March 24, 2026 8:53 am PDT by
Apple today announced Apple Business, a new all-in-one platform that unifies device management, productivity tools, and customer outreach features. The service is designed to be a consolidated replacement for several of Apple's existing business-focused offerings, including Apple Business Essentials, Apple Business Manager, and Apple Business Connect. It provides organizations with a single...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 3, AirPods Pro 2 and AirPods 4

Tuesday March 24, 2026 12:31 pm PDT by
Apple today released new firmware for the AirPods Pro 2, AirPods Pro 3, and the AirPods 4. The firmware has a version number of 8B39, up from 8B34 on the AirPods Pro 3, 8B28 on the AirPods Pro 2, and 8B21 on the AirPods 4. There is no word on what's included in the firmware, but Apple has a support document with limited notes. Most updates are limited to bug fixes and performance...