I'm here only to say thanks !! I'm a man with lucky because from jan-09 i got a ST3500320AS; firm SD15. I'm used an old usb data cable from samsung cell x486 and work fine; that cable had chip 2303; and google pinouts could see what couples are TX and RX; the only important wire. How to said; I got a ST3500320AS with the firm SD15; and one day stop and hide from motherboard; whatever; after complete this procedure fine; must be update to last one firmware from seagate or I'm waiting? Regards.