Ok, so I got a DSTT card that looks exactly like this Yeah I know it's probably a fake.
So at first I formatted my 1GB SD card with Panasonic SD formatter (Full (OverWrite) & Format Size Adjustment: On).
Next I downloaded unofficial DSTT firmware from here...
and before anyone asks who that robot is, it's actually from an episode of the donkey kong cartoon, where dk ends up accidentally switching bodies with it, and there's a banger song in that episode that you may have heard before in a thread