The only way to do this mod is by logging into the Obitalk locally via the web interface. I tried doing it remotely by changing the Codex XML file in the advanced user dashboard of Obitalk, but it isn't the same as the Obitalk Web Interface. The options aren't the same and it doesn't seem to save after you try to restore the settings, so save yourself the trouble.
I attached the last known working firmware version if anyone wanted to simply revert their firmware. Note: The Obitalk maybe autoupdate if a newer firmware is released.