Yeah i received mine in the mail as well from amazon, and it just says R4 II upgrade, though this piece of paper that came with it says "R4 V3" but only there. only problem i'm having is the fact that some games keep freezing a few mins after i start them, i reformated the micro SD to FAT32 like the paper says, but it continued, i think it maybe the r4 itself, i'll try again and if it continues i can exchange it