nEM660产品简介 n与CDMA 1X产品的区别 n软件安装方法 n软件升级方法 n问题反馈方式 n常见问题处理方法 n疑难问题处理方法-nEM660 Introduction n with n the difference between CDMA 1X product software installation method n software upgrade means the problem of feedback n approaches n FAQ n a