https://blog.wongcw.com/2018/10/31/smartftp-client-enterprise-v9-0-2616-0-x86-x64-%e5%a4%9a%e8%af%ad%e8%a8%80%e4%b8%ad%e6%96%87%e6%b3%a8%e5%86%8c%e7%89%88/