Light was green: (after a good day - or so - on charge
I: flashed 0x001d0000 (=1900544) bytes
I: flashed 0x001e0000 (=1966080) bytes
I: flashed 0x001f0000 (=2031616) bytes
I: flashed 0x00200000 (=2097152) bytes
I: flashing of 0x00200000 (=2097152) bytes complete
E: reading data from device: LIBUSB_ERROR_NO_DEVICE
E: flashing data
E: aborting. It is suggested you power-cycle the device.
Will try again tomorrow
EDIT: For the future reader - This device (above) was defective and was returned.