Configurator can not recognize the FC & can not enter the dfu mode

1.Cannot recognize the FC

When you connect your RC with the BF ,your BF show the log that "Failed to open serial port"

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①Download zadig

zadig-2.9.exe

②Open the Zadig， choose “Options”，choose “List all devices”

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③Choose “Betaflight STM32F405”

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④Change the driver target to “USB Serial”（CDC），then click the “Replace Driver ”or “Upgrade Driver”

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⑤Wait until load successfully

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⑥Open BF，it can show the port

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2.Cannot enter the DFU mode

When you flash your firmware，your BF cannot recognize the mode

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①Download zadig

zadig-2.9.exe

②Open zadig，choose “Options”，click “List all devices”

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③Choose “STM32 BOOTLOADER”

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④Change the driver target to “WinUSB (v6.1.7600.16385)”，click  ”Reinstall Driver“

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⑤Wait until load successfully

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⑥Open BF ，it can recognize the DFU mode.

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