Unfortunatly,i got same issue and i cant get the steps in link to work. Every time i boot with volume up + power,device manager sees the thibg, install the provided driver, but then when i run prog through cmd, my device just disappears from pc and i get message usb failed or something and devicenot found.
So now i can only start with power n volume down through cold booting....
If anyone knows wtf to do,please help. Iwill give a6 pack of beer