Install Core FTP to your computer, copy the entire \Program Files\CoreFTP\ directory to your Flash / USB drive
or
Install Core FTP directly to your Flash/USB drive.
That's it.
Navigate to the directory on your Flash / USB drive and run: coreftp.exe -flash
To use your existing Core FTP site profiles from your computer, go into the Site Manager, right click and export your profiles to a file.
Flash / USB drive use with Core FTP