Firmware upgrade tool duplex

Geoff7 years ago

Hi,
I am trying to update my GV500

I have downloaded two versions of the firmware tool duplex and tried 3 different laptops.

Each one gives me a FAIL, error ROM 0, 0x10000000 message.

I only have the one cable they sent me but it has worked in the past and the laptops do read the usb connection and provide a com port.

Any ideas ?