i can’t get the rephone core to comunicate via usb serial. If i open the port, i get this non ending garbled output 
everything else seems to work, i can get a program to blink the on board led no problem.
Anyone else has the same problem?
There are 2 serial ports, right? Maybe you are addressing the debug port instead of the com port?
that’s whats strange. On the second port i can use the AT console. this one works fine, and remains the same independently on which program i upload in memory
You can update the firmware, for me updating the firmware solved this problem
I have the same problem.
Same problem here. I use the RGB LEDs to describe the state 