# Adafruit GPS breakout commit setting to ROM

I have got the following GPS Adafruit Ultimate GPS Breakout

I want the GPS to only output the GPS information in $GPRMC. I am able to do that with this command: $PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29\r\n. The problem is I can't get the GPS to commit the changes to it's ROM so I don't have to change its settings every time it restarts. Is there any command to do that?

Another related question, why does the GPS send multiple sentences seems a bit redundant.

Following are the datasheets & command set: