In Firefox use Thunderbolt

5.4.1.230 after the Thunder has been available through the menu, select "Thunderbolt firefox Firefox browser as the default download tool" in firefox installed in the expansion, and pop-up menu. 5.4.1.230 previous version also has this feature, but dependent on the official version of the installation of firefox (because of the registry information can know firefox location), once the other third-party version is installed or zip-free version of firefox on the Mozhe. This time, in Firefox, click on "document -> Open" (shortcut Ctrl + O), and went to the Thunderbolt Program folder found in thunder.xpi, double-click thunder.xpi to install. Or thunder.xpi fierfox pulled the window installation. 5.4.1.230 version is directly ask you firefox position. After further testing: The Thunder 5.4.1.230. If the official installation firefox, a comprehensive registry of information, the same as the old version of the normal installation. If the registry information is not complete, ask you to direct the location of firefox. At this time if the configuration files of the firefox is normal to generate a profile management, that is, C: \ Documents and Settings \ user name \ Application Data \ Mozilla \ Firefox \ profiles.ini and the corresponding profile presence, then can be installed properly. According to the latest Thunder 5.5.1.241, abolished the registry incomplete information when asked about the location of the practice of firefox, the registry directly on tips not found in firefox the registration button.