I recently got the combination in the title.
I've managed to upload the sketch available at:
However, nothing happens when I type in AT commands in the serial monitor.
I've tried using the native USB port as well.
"Both NL & CR" is always enabled. But I've made sure none of the other options work either.
I'm really at a loss here.
I've tried updating the firmware also, and it doesn't work. It gets stuck at zero.