Main Site Documentation

Cobra II - USB does not work


#1

Hello!
I have my Cobra II for one week now, and I just can not make it run. I did the installation like described in
www.ghielectronics.com/docs/230/first-time-netmf-setup and
www.ghielectronics.com/support/netmf, but when I want to setup a connection via USB the following happens:
The device has been detected, as the pictures below show. But when I want to Ping, an error occurs: “The device is not connected”.
Of course, it does not work with VS either…

Is this normal behaviour? Am I doing something wrong? Or maybe the device is dead on arrival??

Thanks for Your help in advance!


#2

Hey Mori, welcome to the forum.

Here’s the generic troubleshooting guide:
https://www.ghielectronics.com/docs/165/netmf-and-gadgeteer-troubleshooting

I’d suggest as a first step, you will need to have Device Manager open to help figure out the state the device and drivers are in…


#3

Hello Brett,
thanks for your answer!

I solved the problem now. For some reason, it was necessary to erase the current firmware by hand (with TeraTerm Pro). Now with a new firmware the connection-issue works perfectly!