There are two versions of the router. Follow this page
to upload firmware.
Use my custom image from files section of this project.
The default ip on ethernet is 192.168.1.1
Connect by telnet to this ip and set root password then will ne telnet disabled and you can use ssh.
Configure network in /etc/config/network
Connect RTL dongle to device and try rtl_test.
When you get errors, there is problem with power. Use only good micro usb cable !!
When rtl_test works you are done and you can run rtl_tcp or dump1090.