Volcarona's level isn't changing in white 2?

Question

My bother is catching Volcarona.But,it's at Lv. 35! And he just defeated the Elite Four.I read that the Volcarona in Relic Passage turns to Lv. 65 after beating the Elite Four.So what's wrong?

Answer 1

The level 65 Volcarona will only appear at level 65 if you have already defeated/captured the level 35 one (and, of course, defeating the Elite Four). Until you beat the level 35 one, it's level won't change.

Source: Experience. I had the same issue.