Quectel UC20 GNSS At Command Manual page 24

WCDMA Module
UC20 GNSS AT Commands Manual
//The current UTC time is approximately 2013/06/25,15:30:23.
AT+QHTTPGET=800 //Start download.
OK
<It may cost a few time>
+QHTTPGET: 0,200
AT+QHTTPREAD=1,"RAM:xtra2.bin",800 //Store data to RAM file: RAM :xtra2.bin.
OK
<It may cost a few time>
+QHTTPREAD: 0 //Prompt download success
//<utc> format is YYYY/MM/DD,hh:mm:ss, e.g. 2013/06/25,15:30:30.
AT+QGPSXTRATIME=0,"2013/06/25,15:30:30",1,1,5 //Inject gpsOneXTRA time to GNSS engine.
OK
AT+QGPSXTRADATA="RAM:xtra2.bin" //Inject gpsOneXTRA data to GNSS engine successfully.
OK
AT+QFDEL="RAM:xtra2.bin" //Delete XTRA data file from RAM file
OK
AT+QGPS=1 //Turn on GNSS engine
OK
UC20_GNSS_AT_Commands_Manual Confidential / Released 23 / 25