Files can't be deleted?

I found a few files on the SD card of my old Nintendos that I would like to delete in order to use the SD card for other purposes.

Unfortunately, I can't delete the files with a right click (as is possible with other files).

I have attached two pictures for a better understanding.

Would be nice if someone could help me, Thank you very much

Maxi

Try to change them in the "Properties"! Erasure protection of the SD card must be deactivated.