DELETE FROM `#__menu` WHERE `title` = 'com_messages_read' AND `client_id` = 1;

INSERT INTO `#__extensions` (`extension_id`, `name`, `type`, `element`, `folder`, `client_id`, `enabled`, `access`, `protected`, `manifest_cache`, `params`, `custom_data`, `system_data`, `checked_out`, `checked_out_time`, `ordering`, `state`) VALUES
(452, 'plg_system_updatenotification', 'plugin', 'updatenotification', 'system', 0, 1, 1, 0, '', '', '', '', 0, '0000-00-00 00:00:00', 0, 0);