But now the Debug messages are still sent to serial monitor over the serial port which has to be changed to the SoftwareSerial port . Only the "SoftwareSerial.print " messages are sent to SoftwareSerial port . How can i change this configuration ( where ) ? => Variable MY_SERIALDEVICE in MyHwSAMD.h file ? #define MY_SERIALDEVICE SerialUSB Thank you

@gerardosamara great work, thanks for reporting on your success :)