well look at this
https://gbatemp.net/threads/possible-dead-ds-mode-for-this-3ds-or-something-else.398368/
on par, same problem, but pretty old tread sadly....
https://gbatemp.net/threads/possible-dead-ds-mode-for-this-3ds-or-something-else.398368/
on par, same problem, but pretty old tread sadly....