Update Network to ERROR 310

Hello,

My space has been hacked from a hole with Tiny_MCE from Zenphoto (that’s what I guess) and I had to reinstall everything and wordpress.

I deleted all wp files except the wp-content but I empty the plugin folder. I have the same DDB that was originally from WPMU.

I still can’t access to Network Update it goes to ERROR 310. I had the same problem after upgrading from MU to 3.2.1.
The only success came with the solution from Amit Cohen: replacing the admin.php with:

<?php
/**
 * WordPress Network Administration Bootstrap
 *
 * @package WordPress
 * @subpackage Multisite
 * @since 3.1.0
 */

define( 'WP_NETWORK_ADMIN', TRUE );

/** Load WordPress Administration Bootstrap */
require_once( dirname( dirname( __FILE__ ) ) . '/admin.php' );

if ( ! is_multisite() )
	wp_die( __( 'Multisite support is not enabled.' ) );

if ( ! is_main_site() ) {
wp_redirect( network_admin_url() );
exit;
}
?>

This is not working anymore.

Thank for helping or suggestion.