Yep, 2.0. I left it for a few minutes, nothing happened, black screen, no backlight.
About telnes: I got a connection timeout, the device doesnt even appear on the devices listing, unless I turn it on holding Select. The gcw doesnt turn off too, i have to remove the battery (i soldered some wires i used on arduino, so it is easy to remove the cables).
So, the gcw is detected in the usb flashing mode, but it is not when you power it on as a normal device.