Dear all, My pixhawk maybe died after I upload firmware from Qgroundcontrol! now connect to usb cable happend the error ( connect external usb is same)
After upload fw onto pixhawk with QGC. So QGC difficult with me, and I trying flashing fw from Mission Planner, but some thing error in Usb ( the pin of USP maybe not tight, when I keep my hand it can connect. But when my hand strong, Usb take out. I