TechTool Pro update version 6.0.3 provides Mac OS X 1.7 (Lion) support. To perform this version update, launch an installed copy of the TechTool Pro 6 application and select the Check For Update... option located under the TechTool Pro 6 menu. To update an existing eDrive, boot to the eDrive and perform the Check For Update. For more information, visit http://www.micromat.com/downloads/techtool-pro-6-0-3-released.