http://www.zoom.co.jp/english/download/software/ps04.php

Go to this in your browser you can down load the card manager and more importantly the pdf of the instructions.
It does work and you cna make some decent recordings using the onboard mic or by plugging in.
I have had one for some time and it is a marvel but because the controls all have different multiple fi=unctions it take some getting used to .
I find it a little fiddly because of its compact size.
The instructions are what you need and a little patience good luck.