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使用f5529lp 用IAR5.5 下载程序时提示更新 点了之后就卡在进度 强行关了之后 电脑就识别不出lp了

Other Parts Discussed in Thread: UNIFLASH

插上板子 设备管理器闪几下  然后并没有提示有新串口  也没有出现移动盘