Accessing terrain data on SD card

I have just updated the geotiff files for the area where I do my flying. The new files are stored on C:\ProgramData\Mission Planner\srtm. They were generated from the official terrain database in my country, Norway.

Is there any information available on how I can access the existing terrain data on my SD card, how I can remove it if applicable, so it can be renewed?

My flight controller is Mateksys F765-WSE, with a 32GB micro SD card.

Thanks, Helge.

Hello again,
I found the menu item CONFIG → MAVFtp which should solve my question.
Thanks, Helge.