Note 5 Firmware flash

Hi there,

i have the international version of the note 5... called SM-N920I.

I would like to know, if there is a way to install german as main system language
on my device. English is pre installed, but not german.

Furthermore... Samsung told me that at the korean version german is includet.

So i downloadet the version and tried to flash it with odin 3.10.6. But it stockes
at "nands write start" .... its confusing.

If you have any ideas please write... and sorry for my bad english :D

Julja