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LaunchPad之前连接电脑是可以的，后面更新过下载器的固件，后面连接电脑就没有反应了，怀疑是固件丢失了，如何手动下载launchpad 1352上面下载器的固件
您好，
你在设备管理器里查看一下相应的COM口有没有出现，出现了可以参考以下链接手动烧录固件。
https://dev.ti.com/tirex/explore/node?node=ALFqIj4dX6S.TZRERoSphA__FUz-xrs__LATEST
