Looks like this rgn firmware didnt work. updater returned with an unable to program requested memory region. Image attached below.

Not sure of it's related, but I've also notice the model number is now 37xx during bootup and in GarminDevice.xml.
I've searched the forums and saw something similar happened to someone else after flashing a firmware, and lost their bluetooth and voice command feature. But the thread seem to have died without a solution.

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Quote Originally Posted by catymag View Post
To update your traffic receiver:
Download copy and paste this link into your browser

Code:
Please Login or Register to see the links
Bring FirmwareUpdateforGTMxxTrafficReceiver_550.rgn to computer where your device is attached.

Then you can drag-and-drop FirmwareUpdateforGTMxxTrafficReceiver_550.rgn onto the WebUpdater icon on your desktop.