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EVM430-FR6043: 烧录程序失败显示couldn't find device

Part Number: EVM430-FR6043

 之前都是好好的,自从我的USB连接器被我不小心扯下来了以后,我重新买了个连接器焊接上去后就出现这个问题了,焊接新的连接器还出现了连接不上GUI的情况,应该是接触不良,因为当我调整USB线的角度的时候会连接上,所以烧录失败是什么原因呢?