EG95EXGA-128-SGNS enabling gpsoneXtra

Hi,
We are employing EG95 in our devices. The thing is that the GNSS has poor reception and the location we are getting is erroneous. We found that utilizing the gpsOneXTRA will shorten time to fix and help in reliable location tracking. However, on the process of doing it, some AT commands for enabling gpsOneXtra (especially the file handling commands) does not give any response. By the way the firmware version is EG95EXGAR08A02M1G_01.001.01.001.