Kobo Aura N514 stucked in setup

Hi,

I accidentally reseted my Kobo Aura.
I believe its running with FW: 4.19
Now I'm stucked in the wifi connection setup and USB desktop setup that doesn't work.
I've tried placing the new firmware as .kobo on my external sdcard. But It doesn't update.

Any suggestion how to recover it?
Thanks in advance.