what do you want? update FW ?
you can do follow my steps
1 press reset key, and hold on, then,turn on power of modem, after 15 secs , open 192.138.1.1 on web
2 you will get the cfe mode ,you can select a FW which one tag is BCM6328avng ,press update
you'd batter buy a TTL board for this prossces
you can download TP link TD-W8950ND V2 TD-W8960N V4, netcomm NB604N ,dlink dsl-2760u-e1 billin 7800NL ....from the offical web site or google