module.exports = function updateCommand(program, helpers) {
  /**
   * Script to update project plugins
   */
  var we;

  program
  .command('update')
  .description('Run plugin update functions in current project')
  .action(function run() {
    we = helpers.getWe();

    we.bootstrap(function(err, we) {
      if (err) return doneAll(err);

      we.pluginManager.getPluginsToUpdate(function (err, plugins) {
        we.log.info(plugins.length +' plugins to update.');

        we.utils.async.eachSeries(plugins, function (plugin, next) {
          we.pluginManager.runPluginUpdates(plugin.name, next);
        }, function (err) {
          if (err) return doneAll(err);

          doneAll();
        });
      });
    });
  });

  function doneAll(err) {
    if ( err ) {
      we.log.error('Error:', err);
    } else {
      we.log.info('DONE All updates');
    }

    we.exit(function(){
      process.exit();
    });
  }
}

@@ -260,16 +260,53 @@
 s.getWe(
+%7B%0A      bootstrapMode: 'update'%0A    %7D
 );%0A%0A    
@@ -326,16 +326,17 @@
 function
+ 
 (err, we

add update bootstrapMethod in update command