Installing into Firefox Portable without local administrative rights. Can install firebug into Firefox Portable. Installing into Firefox Portable without local. Download firebug 1.12.1. Firebug for firefox. That's a good reason to install it. Adobe Flash Player is prepared for the following browsers.

To manually install a Firefox extension into Firefox, download the add-on to your computer. If the download option isn't available, right click on the extension install link and select 'Save Link As.' Be sure not to change the file extension. A Firefox extension will usually be a.XPI file. Next, go to the Firefox drop down menus at the top of the browser. Select File >Open File then select the addon.xpi file and click on Open.

Change Serial Number Flash Drive on this page. The Software Installation window will appear, click install, restart Firefox.