Problems with changing baud rate - device connected to Arduino Uno

Projects Programming
2 
GPS_Serial.begin(115200);

SoftwareSerial won't work at 115200 baud. I think 38400 is its upper limit and 9600 would be even better.

If you need a high baud rate then you need an Arduino with a spare HardwareSerial port such as a Mega or a Leonardo or Micro.

Also, there is no point changing the baud rate on the Arduino unless you also change the baud rate on the device it is talking to.

...R