Software Update Guides

From time to time, Apple releases updates to the Mac OS X operating system and installed applications on your Mac.  Apple has provided a utility called Software Update to allow you to easily identify any relevant software updates when they become available for your Mac.
If you want to manually check for Mac OS X and/or application updates for your Mac, you'l need to launch Software Update.
Instead of using Software Update to install updates you can download and install an Apple provided update via a standalone installer.  Many Mac users prefer to use the standalone installer instead of Software Update.
Apple provides two types of Standalone installers, Delta and Combo.  Standalone installers are an alternative to using Software Update.
If you want to manually check for Mac OS X and/or application updates for a  Mac running Mac OS X Leopard, you can launch Software Update.  For the most part, Software Update on Mac OS X Leopard works in much the same way as it does on Mac OS X Tiger.
One of the new features in Software Update starting with Mac OS X Leopard is that it can download important updates in the background without your intervention.  When the updates have finished downloading, Mac OS X will notify you that new updates are ready to be installed.  If you do not want to use this feature or prefer to run Software Update manually, use the following steps to disable the feature.
There's a quick and easy way to know which updates have been installed by Software Update on your Mac.