DEVO M (F7) does not connect USB after upgrade

08 Oct 2018 15:37 #71228 by K1@udio
Dear, after I made an upgrade to version 1.7, the LEDs of the Walque QR350 Pro drone remained in solid green, When connected to the USB PC, the computer does not recognize it, so I can not perform a downgrade firmware, and the Drone I'm unusable, Please Help

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