My imported PHEV contained an envelope which said "MMCS latest map data update free redemption coupon" with a coupon code on the back side of it. Attaching the image for reference.
As of now, the J11 MMCS head unit is displaying in Japanese language and I am hoping this coupon could be of some use to get it to English.

Has anyone used such a coupon for updating the maps ? If so, please share details.

Thanks

Map update coupon