Ok, I've given it yet another try!
Here's what I get:
Steps to replicate, please see if I'm missing something:
1. Connect the USB UART, it's on COM3 on my machine
2. Connect GND to GND, RX to TX, and TX to RX.
3. Connect a mini-USB cable to the bottom of the device
4. Start Termite with settings as shown in the picture.
Then no response. I get OK+SCAN from the unit, but it's like it doesn't receive commands. Should I press any buttons (I see a "Config" and a "Reset button)?