I was able to reconfigure Google Voice on my OBi202, OBi110 and OBi100 without deleting my device from OBiTalk and without resetting the OBi devices. After the update to OBiTalk method for provisioning Google Voice, I went into SP2 on each of the devices, when I attempted to update and save changes I was prompted to complete the firmware update. After the firmware update was completed, I was able to update the Google Voice configuration on SP2 using the new method.
The ability to update the Google Voice configuration without deleting my devices from OBiTalk was a much appreciated time saver as I have multiple VoIP service providers on each of the devices. The OBi202 has Vestalink on SP1, Google Voice on SP2, VoIP (for Home #) on SP3 and VoIP (for Home Office) on SP4.