Possibility that you own or operate EcoRouter 2008 with EcoBNGOS are very low. However just in case you will have to work with this one it will be useful to know at least some basic commands. I choose user password change as it is the most important thing at first glace after setup, so:

enable
configure terminal
username admin
password YOURPASSWORD
write

After this logout and login again to check if it is working. On some routers there might be a problem with not enough disk space to save configuration change, that’s why you need to also check if the change has been applied properly.