Access the SD card in CUBE

Hi everyone,

I am trying to access the SD card in CUBE without removing it.
The object is to upload the .DAT file to APM/TERRAIN folder with only usb cable to CUBE or through mavlink, does anyone have experience in accessing the SD card directly before?

Your help is appreciated!
Haoran

use mavftp in mission planner

I will try, thank you for the reply