Did you enter the DNS / gateway setting for the router, they are 0.0.0.0 by default? As for installing package to the router to the jffs, you need to have optware or alternative which usually require external USB storage which nanostation lacks. If you are thinking of settling up optware on jffs, you may need a lot of jffs space. Have you check that jffs2 is working and how many free space is available for jffs?