What Tama do u have to have to get a UraTama?

[Zegotchi]

I have a v2 v3x2 and v4x2, I was wondering, do u have to have a percific TamaROXIE (hehe(Tamagotchi) to get a UraTama????

 

[TamaMum]

The "ura" characters appear on the V4.5 tamagotchi: https://www.tamatalk.com/IB/index.php?showtopic=117034 which was a development from the Japanese tamagotchi called the Entama which had the ura characters on it.