Some users attempt advanced firmware modifications (often via SD card) to replace system files with English versions, though this is not officially supported and carries a risk of "bricking" the device.
The system menus and voice guidance are natively in Japanese. Pioneer Carrozzeria Avic-zh0007 English Manual
Use the "Instant Camera" feature on your smartphone to translate Japanese menus in real-time. Pioneer Carrozzeria Avic-zh0007 English Manual