Look at the information provided, specifically the (e.g., Alcor, Silicon Motion, Phison) and the Controller Part Number (e.g., SM3257EN, AU6989).

If it fails, right-click and select Uninstall device . Once removed, click Action > Scan for hardware changes to force Windows to re-detect it. Method 2: Manually Download the Driver

Search for the mass production tool (MPTool) corresponding exactly to your controller part number.

The drive appears in Device Manager under "Disk Drives" as Nand Usb2disk Usb Device .