If you are reading this, you have likely done something either very brave or very foolish: you have purchased a used . Perhaps it came with a JDM import vehicle (Skyline, Crown, Estima), or you grabbed it cheap on eBay because it looks like a high-end 2010s double-DIN unit.
Let me save you hours of frustration:
Return the unit and buy a Pioneer AVIC-W8400NEX (US) or SPH-DA160DAB (EU). The headache of the RZ500’s language barrier is not worth the sleek Japanese aesthetics. Pioneer Carrozzeria Avic-rz500 English Manual