where can I find a free downloadable Motorola V600 USB software?

Answer 1

Depends upon the 'made' of that USB
but you can try these as only you know about it

http://www.freedownloadscenter.com/Best/usb-software.html

http://www.newsoftwares.net/folderlock/

http://www.downloads.com

http://www.drivershq.com

Answer 2

any p2p program should have it
try limewire first
if not, then go to torrents
i use the program called bitlord, it's really easy and simple to use just like limewire