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4500烧写程序中途断电,准备重新给FLASH通过JATG烧写程序

4500烧写程序时中途断电,重新上电后D4不亮,电源指示灯会亮,能不能使用JATG接口给FLASH烧写程序,使他重新工作,烧写程序准备用um232h,他的驱动下载vcp版的可以使用吗驱动具体改怎么安装呢。