Incorrect country entered during initial setup

Hello!

I accidentally entered the wrong country during the initial setup on my HP Color LaserJet Pro MFP M477fdw and cannot find the option to change it to the correct one. I have tried resetting to the default settings but this does not allow me to change the country. I also managed to do the hard reset - like in your video: 

make a permanent storage initialize, view in link

https://www.youtube.com/watch?v=Pe0Ar1TyBHY 

 but this only reset settings loke WiFi settings and other settings - but not the country - /printer is comunicating in wrong language with me - only when it prints a report page.

Any advice would be much appreciated.

Many thanks in advance!