<!--[if !supportLists]-->· <!--[endif]-->Do you see message list output on your browser?

<!--[if !supportLists]-->· <!--[endif]-->Please, explain in more details, in what software do you use this command?
http://x.x.x.x/cgi-bin/sms_list?username=admin&password=xxxxxx
<!--[if !supportLists]-->· <!--[endif]-->Is this software compatible to send HTTP post/get strings to router?
yes
<!--[if !supportLists]-->· <!--[endif]-->What output or error do you get then?
None the router displays the above two messages only., see below as it has sent 78!.

It is always recommended to check is your device is running latest firmware. You can download it here.
- FW ver.: RUT9XX_R_00.06.05.3