Yesterday I tried to update the firmware on our DNX7330BT unit. The update failed and as a result the screen remains black when turning on the engine. Once the red triangle reset button is pressed the LED behind it comes on for a few seconds and then goes off again.

Are there any option to fix this issue? Most solutions I found online deal with loose connectors or resoldering / "reflowing" PCB's.

My issue was clearly brought on by the software update , so I can rule out a mechanical fault.

On this forum I found a closed thread in which the OP described a similar problem after a failed update. He was able to solve it by replacing
the "nand memory" but not more information was given.

Does anyone know more about this? Is this "nand memory" the memory chip inside the unit that holds the firmware?

Any advise is welcome!!!