I don't know what file system does it use.
I have tried on Ubuntu 12.04 and Windows 7.
In Linux, it recognises it as 128 MB card, but can't do anything except format it.
In Windows, it only asks to insert drive, and nothing can't see it.
I don't know how to use that "dd" command. In fact, I do not know how to use any commands in Terminal, other than "sudo-apt-get" and similar. :/