You are wrong ...
universe folder in correct place (root) ...
Why you make Symlink from media to root ?! this is wrong..
Just install plugin > then must to be mount your usb pin to /universe direct no need to create Symlink to media ...
Openpli doesn't have Device manager to make mount usb to /universe ...
So after install plugin on openpli open (fstab) file from /etc and put this line
/dev/sda1 /universe auto defaults 0 0
make sure your pin is (sda1)
then reboot box after reboot try plugin again and do jump ...
after jumping give this command in telnet and post here your result