The Available Updates wizard shows you what updates are available for your software. This wizard is shown if you click the automatic updates notification popup, or if you check for updates using the Help > Check for Updates command. To update your system:
Some of the items may be digitally signed by the company that provides them. This allows you to verify more easily that the features and plug-ins that are about to be downloaded and installed are coming from a trusted supplier. You may be prompted to verify digitally signed content once the signature is detected.
Warning: Because of the possibility of harmful or even malicious software, you should only download software from parties that you trust.