Is my black cube dead?

After a failed attempt to install Open Solo 4 and a full reboot, the Solo’s LEDs went all green and can’t be seen by the controller. The pair/reset button has no effect. I was advised to directly connect the stock cube with Mission Planner to update the firmware. I get a COM port, but am unable to connect at any baud rate. The board has solid and flashing orange LEDs. Thanks for any insight.

try to put in it Rover firmware and than again your FW.