Can you restore an XBee ZB which was altered serial port settings?

Yesterday, I tried to change the port settings because I was reading that the serial communication with a microcontroller needs a flow control lines. However, when I tried to make it, I changed the port D6 and D7 because I suppose that if I disable them then my microcontroller doesn’t need to use flow control signals. But my XBEE ZB didn’t change them and at the moment I can’t load a new firmware because the device is not found. I tried to change the port settings to read the current firmware but I don’t get nothing. I need help with this because I don’t like to thing that my device

You might want to look over the recovery procedures here: