Source

File: wp-includes/ms-blogs.php

function update_blog_details( $blog_id, $details = array() ) {
	global $wpdb;

	if ( empty( $details ) ) {
		return false;
	}

	if ( is_object( $details ) ) {
		$details = get_object_vars( $details );
	}

	$site = wp_update_site( $blog_id, $details );

	if ( is_wp_error( $site ) ) {
		return false;
	}

	return true;
}