Here are some common issues users face when trying to change the language on their Eclipse AVN-Z04IW:
There are specialized services, particularly in Eastern Europe (often referred to as "Russification"), that can completely rewrite the firmware of the AVN-Z04iW to support other languages like Russian or English.
app on your smartphone. Set it to "Japanese to English" and use the Camera/Lens
have a built-in menu option to switch the interface language from Japanese to English. carfromjapan.com
If you do not want to modify the hardware, you can use to navigate the existing Japanese menus :