I recently had an Obi100. I have the same router. I am trying to install new Obi200. I have deleted the Obi100 in my profile, deleted all my google telephony apps. No LED light on Phone. Power is steady green. Internet is green with some flickers. I tried doing factory reset, hold until green starts to flicker and then release. It stays green and doesn't reset like the tutorial says it will. So I don't know what firmware/if it has actually reset. I cannot dial ** anything. Its like the phone line is dead. Any thoughts??? Help is greatly appreciated.
https://www.obitalk.com/info/faq/Troubleshooting-sec/How-to-Factory-Reset
Are you following that to the letter?