Morning -
I've just purchased a Nano and despite trying it on 4 different machines/OSs it is refusing to be recognised. Judging from the LED activity, the processor is alive; power is on & L is flashing - but attempts to install updated drivers fail on Windows as it is adamant that the drivers are not valid for that device; Linux recognises the device has been plugged in (new fullspeed USB device using ehci_hcd...), but doesn't subsequently show under lsusb.
This Nano is not screened with Gravitech on it - instead it has www.funduino.com (which doesn't seem to offer a web page); I'll see if the FTDI TEST pin is tied to GND shortly (if someone is working from an older schematic...), but other than that is there anything else I should be looking for?