romeo探索者教育机器人能识别到串口，但串口无法下载

         System wide configuration file is "D:\Program Files (x86)\Mind+\Arduino/hardware/tools/avr/etc/avrdude.conf"

         Using Port                    : COM5
         Using Programmer              : arduino
         Overriding Baud Rate          : 115200
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x6a
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x6a
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x6a
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x6a

         System wide configuration file is "D:\Program Files (x86)\Mind+\Arduino/hardware/tools/avr/etc/avrdude.conf"

         Using Port                    : COM5
         Using Programmer              : arduino
         Overriding Baud Rate          : 115200
avrdude: ser_open(): can't open device "\\.\COM5": ϵͳ�Ҳ���ָ�����ļ���



avrdude done.  Thank you.

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请高手指导！

是不是stk500模块有问题，下载时TX灯也不闪烁

是不是remeo V2.2板有问题啊？