MC60 trouble with PMTK comand

Hello. I send command to MC60 module - “AT+QGNSSCMD=0,”$PMTK60531"\r\n". I receive in response this error - “AT+QGNSSCMD=0,”$PMTK60531"\r\r\n+CME ERROR: Operation failed\r\n". GNSS and AUX connected. Baudrate is 9600. I hope your help.

This string does not seem to be supported. I have sent you the manual related to GNSS by private email. Please refer to the description and routine of AT+QGNSSCM in it