http://forum.s1mp3.net/

http://www.stud.uni-karlsruhe.de/~uwa8/s1mp3/?Download

para extrair su firmware   s1fwx.exe

http://search.qihoo.com/usearch.html?site=forum.s1mp3.net&kw=2085&ics=utf-8&ocs=utf-8&bbskw=&summary=1&stype=&count=20&fw=dz&SITEREFER=http%3A%2F%2Fforum.s1mp3.net%2F&ALTBG1=%23F5FBFF&ALTBG2=%23FFFFFF&LINK=%23154BA0&BORDERCOLOR=%2386B9D6&BGCODE=background-color%3A%20%23FFFFFF&BOLD=bold&HEADERTEXT=%23154BA0&TABLETEXT=%23333333&TEXT=%23333333&BORDERWIDTH=1&TABLEWIDTH=98%25&TABLESPACE=4&FONT=Tahoma%2C%20Verdana&FONTSIZE=12px&NOBOLD=0&IMGDIR=images%2Fdefault&CATTEXT=%2392A05A&SMFONTSIZE=11px&SMFONT=Arial%2C%20Tahoma&MAINTABLEWIDTH=98%25&INNERBORDERWIDTH=0&INNERBORDERCOLOR=%23D6E0EF&BGCODE=background-color%3A%20%23FFFFFF&MAINTABLEBGCODE=MAINTABLEBGCODE&CATBGCODE=background-color%3A%20%23FFFFD9&HEADERBGCODE=background-image%3A%20url%28%22images%2Fdefault%2Fheader_bg.gif%22%29

MP-482C   AND ATJ2085

http://www.s1mp3.org/pt/

http://www.s1mp3.org/pt/downloads_fw.php#top

lista de firmware disponiveis para download

neste forum há diversos modelos, mas como é japones nao consigo identificar, quem sabe tem algum japones inscrito neste site que possa nos ajudar?

http://forum.s1mp3.net/