自动更新升级程序的小程序，支持断点续传功能，具体怎么用请详见DOC下的说明文件。注意不要删除backup和update这两个目录。另外mzsf这个目录要上传到服务器端。-Automatic update procedures of small procedures, support HTTP functionality, how to use, please refer to DOC documentation. Be careful not to delete these two direct