Default Usb password recovery tool help please

I'm not sure where else to post this since I am to new and not allowed to post on the thread regarding the USB Password Recovery Tool so I apologize if I'm in the wrong place.
I've been trying for hours to get the tool to work on my Sprint Galaxy S4 mini SPH-L520. Sounds simple enough but I'm not doing something right. Issues are I don't know how to go into Mass Storage as its not an option and I am unable to find the exe files I am to run from SD card...I really want to try it out but am struggling. Thank you on advance