WP76xx RMC update frequency


I was trying to find if it is possible to configure the NMEA RMC update frequency in the WP76xx series? It seems that it is by default set to 1Hz, I would like to increase it to something like 10Hz.

I have found the following document in Sierra Website:

I sent those PMTK messages through ttyUSB1 (NMEA port) but I had no response from the module. On the other hand, I can use the commands $GPS_START and $GPS_STOP

Hope someone can help me