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常规升级成功，之后连接到电脑， 点击之后总是显示超时连结，重新安装了驱动， 但并没有什么用，连接时正常闪灯，之后不闪灯。
重新烧录固件试一下，如果还不行就寄回卖家维修。
点击之后总是显示超时连结，重新安装了驱动，
但并没有什么用，连接时正常闪灯，之后不闪灯。