Flashing firmware will on the USB drive. This process is a "factory reset" for the hardware. If you need to recover files, do not use the MpTool; use data recovery software like Recuva or R-Studio first. Troubleshooting Common Errors "No Hub Found": Try a USB 2.0 port instead of USB 3.0.
This usually indicates a physical hardware failure in the NAND chip, meaning the drive cannot be saved. firstchip fc1179 firmware link
Your drive should appear in one of the numbered slots. Flashing firmware will on the USB drive