► Create your own favicon.ico file using any graphic tools or with the help of any online favicon generator tools like dnamicdrive.

► Navigate to admin » site building » themes and click the configure link next to your current theme. This will bring up the theme configuration page.

► Here you will see a section titled Shortcut icons settings. You can either upload your favicon file or specify the path to your customized icon file.

The changes may not appear immediately in your browser, you need to clear your browser's cache and reload the page. If you have bookmarked your site, you may need to delete the bookmark and then recreate it again so that the new favicon will appear in the bookmarks menu.