Hi...Maybe this will help..Model # may be wrong..
http://www.fixya.com/support/t26130988-change_japanese_language_into_english How do change Japanese language into English language on my AVIC MRZ07...
The general consensus is that Pioneer Carrozzeria devices are usually intended for use in the Japanese market, if the language is already Japanese it probably cannot be changed to another language.
However, in general, when you reset a Pioneer device back to factory settings (the 'factory reset'), the first prompts received should be for
and so forth. So if you hard reset it, you should get a list of options to choose from, one of which would be either
or else the Japanese equivalent
So see if you can factory reset the device. This is, on Pioneer devices (generally speaking) done by holding down one button while powering the unit On... which button in this case? I am not sure (you have not stated which model of Carrozzeria device you have), but with the model # ***** could perhaps find out more specific information.