about the name of blog

i’m a very beginner in WP. i was trying to add the logo in place of the name of the blog. i’ve downloaded a template and in the header section the code was <h1>“><?php bloginfo(‘name’); ?></h1> now when i’m updating it like <h1>“><img src=”location of the image”> </h1> it is not working.

can anybody help me.. that why it is happenning..