请问TMS320C6657 EVM如何恢复默认镜像

TMS320C6657 EVM 我尝试恢复默认系统镜像， 按照文档 program_evm_userguide.pdf 中的步骤，进行了DIP设置
文档中没有找到硬件连接的设置， 我的连接方式为6657EVM上自带的XDS200  mini u*** 连接PC u*** 接口， EVM 电源加电

在win7命令行中按照文档介绍，进行默认镜像恢复， 报错找不到仿真器。
D:dspMY_DATA_101512MY_DATA_101512program_evm>%DSS_SCRIPT_DIR%dss.bat program_evm.js tmdsevm6657ls -le
board: evm6657l
endian: Little
emulation: XDS200 emulator
binaries: D:dspMY_DATA_101512MY_DATA_101512program_evm/binaries/evm6657l/
ccxml: D:dspMY_DATA_101512MY_DATA_101512program_evm/configs/evm6657l/evm6657ls.ccxml
E_RPCENV_IO_ERROR(-6) No connection: DTC_IO_Open::dtc_io
Failed to open i/o connection (xds2xxu:0)
SEVERE: IcePick_D: Error initializing emulator: (Error -2083 @ 0x0) Unable to communicate with the emulator. Confirm emulator configuration and connections, reset the emulator, and retry the operation. (Emulation package 5.0.838.0)
SEVERE: Could not start server: DebugServer.1: IcePick_D: Error initializing emulator: (Error -2083 @ 0x0) Unable to communicate with the emulator. Confirm emulator configuration and connections, reset the emulator, and retry the operation. (Emulation package 5.0.838.0)
请帮助下， 如何处理连接仿真器，谢谢。