Our problem here is that we have a script that should write the random MAC address. But after we used the script, the board becomes not discoverable. We cannot program or recover the board.
Also if we used SDK and specify random MAC address, we have the same issue.
Why does specifying a random MAC address seem to brick our boards?
The error in download.log was like this:
Error creating a transport connection ( PORT=COM3
BAUDRATE=115200
) Failed to open the specified port!
