If he can't get it to work with his computer, there is no way to flash the drive. So I don't think there is anything that can be done to fix it. He says there is no light on it, which probably means it has no power. Unless he connected it wrongly, that means the drive is dead. The lack of a label seems suspicious to me, as if someone deliberately does not want the serial number of the drive to be known.
That is too many things that seem wrong with that drive. So yes, I too think he should try and get a refund for that.