You should add it on your theme’s header.php file with this code (W3C standard code):
<link rel="icon" type="image/png" href="http://yourblog.com/favicon.png">
You should add it on your theme’s header.php file with this code (W3C standard code):
<link rel="icon" type="image/png" href="http://yourblog.com/favicon.png">