PX4 upgrade bricked Orange Cube

I was using QGC to flash PX4 onto my Orange Cube (I am using Kore board)

It started to process and then hit me with a timeout error.
Now, I plug in my USB, all the lights come on, it connects to the computer for half a second and then immediately disconnects.

No serial port is listed. No coms port is listed. No device seems to be added.
It appears I have bricked the device.

Is there any suggestions of what I can do from here?

Thank you

The bootloader maybe corrupted. If the COM port is not even showing up, you will need to send it back to your distributor.