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TUSB9261固件刚烧进去时 用，重新拔插USB就不能用了，再次烧写又可以用了，就是不能断电，断电了就要重新烧写固件（固件是默认的v1.05版本的），这样的问题有谁知道是哪里的问题，原理在附件里。
