You can change the language in the "Configuration"-screen.
1. Click on the cog in the right bottom of the main screen.
2. Press the big arrow.
3. Click on the yellow folder with a cog in it.
4. The first "post" is the language, change that to the one you want.
Hallo
during installation I have choose a wrong language, and I'm not be able to change it neither to install run.gps another time .
I have read installation manual but I do not find explanation to do it.
Tank you