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更新固件按官网上的教程整的然后提示要用DFU烧录然后让短接BOOT和BST短接之后等他一会子还是显示烧录失败DFU引导加载程序失败
可以尝试更换数据线或者另外一台PC进行尝试
@uzbd 更换了数据线换了电脑也不行
@a3un 这样目前看起来使硬件问题，论坛难以解决硬件方面的问题