Umxru

Hi everyone, yesterday I went with a friend to go purchase a 350z and we decided to take it off the sellers hands! Things are looking good with it in regards to common issues that are mentioned, however, the navigation touchscreen display is fully in Japanese (since the car was an import), being someone of a techy background i am assuming this can be changed by flashing new firmware, but I have also read that with cars it is sometimes not so simple. Has anyone has experience dealing with this and could you lead me in the right direction to change this display to english for my friend. Thanks in advance :)