买的Tang Nano高云小蜜蜂系列 GW1N-1 FPGA 的简约型开发板，点灯教程最后烧录的时候出错。2块开发板都是，怎么解决。
Info: “SRAM Program” starting on device-1…
Warn: Unknown Cable
Warn: Unknown Cable
Info: User Code: 0×00003AEB
Info: Status Code: 0×0001F020
Info: Cost 5.01 second(s)
:
Info: “embFlash Erase,Program” starting on device-1…
Warn: Unknown Cable
Warn: Unknown Cable
Info: Status Code: 0×00015421
Error: Finished, NOT wakes up
Info: User Code: 0×00000000
Info: Finished!
Info: Cost 14.55 second(s)
:
Info: “embFlash Erase,Program” starting on device-1…
Warn: Unknown Cable
Warn: Unknown Cable
Info: Status Code: 0×00015421
Error: Finished, NOT wakes up
Info: User Code: 0×00000000
Info: Finished!
Info: Cost 9.56 second(s)
:
