You must dismantle this USB flash drive to repair,
Short-circuit method: according to the requirements of the attached chart with a paper clip or tweezers to connect the pins, and then connect the USB flash drive to the computer (Note: This process your paper clip has been shorted pin) your USB flash drive LED light will change, and so on, it is stable to take away the paper clip. Then open your chip detection tool or mass production tool on OK!