If the console cable is miswired, it would almost certainly kill your RasPi in a way consistent with the 'USB overload' message you got.
That kind of thing would be a freak production error, but it's theoretically possible. If it did happen, we owe you some new hardware.
Just to be absolutely sure, please post a photo of the console cable plugged into a USB hub, and a multimeter taking a voltage reading between the red and black connectors that go to the RasPi.
When you void a product warrany, you give up your right to sue the manufacturer if something goes wrong and accept full responsibility for whatever happens next. And then you truly own the product.