I have a W700i and I have a strong feeling it only works as a modem under Win I can get the photos off it easily (don't use the mp3 in it) it just appears as a USB "disk" I think you should google w810i + linux or + ubuntu or +mint Unfortunately you get lots of hits for skins and the like ....
Don't fix it if it ain't broken, don't break it if you can't fix it