如何在不卸载整个产品的情况下将Visual Studio 2013 Update 5还原到Visual Studio 2013更新4

I have to use Web Essentials 2013 but it is not available for Visual studio 2013 update 5.I would have to have VS 2013 update 4 installed in order to install Web Essentials 2013. Is there is any way I can install VS 2013 update 4 without uninstalling entire VS 2013 update 5 to save time. I have to use Web Essentials 2013 but it is not