Plug in your USB stick. The software should populate a list or show a "Device Found" message.
The utility is usually a portable "EXE" file that requires no complex installation. How to Use the Skymedi Format Tool skymedi usb drive format tool
Here is a comprehensive guide to understanding, using, and troubleshooting your drive with this software. What is the Skymedi USB Drive Format Tool? Plug in your USB stick
Unlike a quick format, this resets the drive's internal structure. skymedi usb drive format tool
If the software says "No Device Found," try switching to a USB 2.0 port (the black ones) rather than a USB 3.0 port (the blue ones). Older Skymedi tools sometimes struggle with modern high-speed ports. "Format Failed" Messages