I did try using your guide but couldn't get the card to connect to my router.
According to this https://www.toshiba.co.jp/p-media/ww...ive_webdav.pdf the Flashair drive option only works with W-03 cards.
When I ran the Flashair tool, the Flashair drive option was greyed out so I guess W-02 cards are not compatible.
I can still ulpload to the card by connecting directly to it and using the browser mod however.