there is no app for a computer. you can plug it in and use it like any other flash drive or you can access it via a web browser but the web browser access has limited functionality.
You have posted in the wireless stick board but your title says wireless flash drive. I will link the reset instrucitons for both below.
reset instructions for Wireless Stick
http://kb.sandisk.com/app/answers/detail/a_id/17549/
reset instructions for Wireless Flash drive
