About the OS X Lion v10.7.1 Update
The OS X Lion v10.7.1 Update is recommended for all users running OS X Lion and includes general operating system fixes that enhance the stability and compatibility 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. When Software Updates states "Your software is up to date," you can be sure that all available updates have been installed.
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 more than once to make sure you have all available updates.
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.
The OS X Lion v10.7.1 Update is recommended for all users running OS X Lion and includes general operating system fixes that enhance the stability and compatibility of your Mac, including fixes that:
- Address an issue that may cause the system to become unresponsive when playing a video in Safari.
- Resolve an issue that may cause system audio to stop working when using HDMI or optical audio out.
- Improve the reliability of Wi-Fi connections.
- Resolve an issue that prevents transfer of your data, settings, and compatible applications to a new Mac running OS X Lion.
- Resolve an issue in which an admin user account could be missing after upgrading to OS X Lion.