Change credit line in footer

You need to change part of footer.php FROM:

<?php
			        printf( '<div class="span4 credits"><p> &middot; &copy; %1$s <a href="%2$s" title="%3$s" rel="bookmark">%3$s</a> &middot; '.__('Designed by ','customizr').'<a href="https://www.themesandco.com">Themes & Co</a> &middot;</p></div>',
							    esc_attr( date('Y') ),
							    esc_url( home_url() ),
							    esc_attr(get_bloginfo()),
							    esc_html( get_the_date() )
							  );
			        //printf($credits);
			        ?>

TO:

<?php
			        printf( '<div class="span4 credits"><p> &middot; &copy; %1$s <a href="%2$s" title="%3$s" rel="bookmark">%3$s</a> &middot; '.__('Designed by ','customizr').'<a href="https://www.themesandco.com">Themes & Co</a> &middot;  Built by LJHmedia</p></div>',
							    esc_attr( date('Y') ),
							    esc_url( home_url() ),
							    esc_attr(get_bloginfo()),
							    esc_html( get_the_date() )
							  );
			        //printf($credits);
			        ?>

However, you should do this in a child theme.

now , the footer changed the code:

?>
<?php tc__f(‘rec’ , __FILE__ , __FUNCTION__ ); ?>

<?php do_action( ‘__before_footer’ ); ?>

<!– FOOTER –>
<footer id=”footer”>
<?php do_action( ‘__footer’ ); // hook of footer widget and colophon?>
</footer>

<?php wp_footer(); //do not remove, used by the theme and many plugins?>

<?php do_action( ‘__after_footer’ ); ?>

</body>

</html>

what I should modify? thanks

solved. it is in class-footer-footer_main.php

Thanks