The OS X Lion v10.7.5 Update is recommended for all OS X Lion users and includes general operating system fixes that improve the stability, compatibility, and security of your Mac.

Updating your system

You should back up your system before installation; you can use Time Machine.

Do not interrupt the installation process once you have started to update your system. 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. Choose Software Update from the Apple () menu to check for the latest Apple software via the Internet, including this update.

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, so you should run Software Update until Software Updates states "Your software is up to date".

You can manually download the update installer. This is a useful option when you need to update multiple computers but only want to download the update once. These versions of the standalone installers are available from Apple Support Downloads.

Additional Information

The OS X Lion v10.7.5 update includes Gatekeeper, a security feature which helps you keep your Mac safe from malicious software.

This update also includes fixes that:

• Resolve an issue in which icons in Launchpad could get rearranged after a restart
• Improve Wi-Fi reliability for iMac (Late 2009 and newer)
• Resolve an issue using Spotlight to search an SMB server
• Improve compatibility connecting to Active Directory servers
• Address an issue playing audio when a MacBook Air (Mid 2012) is connected to a Thunderbolt display
• Improve Active Directory clients updating computer password and DNS records
• Correctly update the keychain when changing an 802.1X password
• Address an issue that could cause text input fields to appear black in some applications
• Preserve iCal events when migrating to Microsoft Exchange Server 2010
• Enforce managed preference based on a user's primary group
• Address an issue accessing secure websites when using a web proxy
• Improve compatibility with RSA token used to authenticate with 802.1X networks
• Improve compatibility with Centrify DirectControl authentication
• Enable automatically logging into an NIS account
• Support @icloud.com email addresses
• Resolve a video issue with some VGA projectors when connected to certain Mac notebooks

For information on the security content of this update, please visit this website.

Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple’s recommendation or endorsement. Please contact the vendor for additional information.