I'm researching how to upgrade from a 100 to a 202.
EDIT:
Upgrading from OBI100 to a 202 when you already have a google voice account and phone number.
This is what worked for me:
I logged into
OBItalk.com and deleted the SP1 account. Then I deleted the device.
Then did a factory reset on the OBI100 by pulling the power plug, inserting a paper clip into the bottom, and reinserting the power plug. Once the light turns red you can remove the paper clip.
https://www.obitalk.com/info/faq/Troubleshooting-sec/How-to-Factory-ResetThen I plugged in the 202. Router, phone line, and power cord. See the instruction sheet that came with your 202.
Back on
OBItalk.com I clicked "add device" and followed the prompts. Make sure the "I want to configure google voice on this device" is checked and it will walk you through everything.
Very easy process, I did not have to enter any passwords.