I recently got VoIP from a local ISP and they sent me a SPA-2102. I would like to update the firmware on it, but the device is locked. I would like to unlock it and update the software, but, I have a few questions. If I unlock it will I loose the stored settings from the ISP. Is their a way to retrieve this information so I can input it in after the update. Is thier a risk that the VoIP service won't work with the newer firmware. Thanks for any info.