I don't have THAT BAD of a memory , not saying you said so but , I know I'm really REALLY sure I upgraded the mega ring because I was bored in the post game and did the looker quest and a requirement for the looker quest is UPGRADING THE MEGA RING and it activated so that means I upgraded it. And even without the whole ' looker quest ' thing I know because I do battle's with Calem when I feel like it and one time he told me ( my character ) to go to prof. Sycamore in Anistar so there's another proof . Also , I'm on vacation in L.A. and the only kid in the house we're living in IS ME. According to certain guides , I'm supposed to be doing EVERYTHING right. I'll go to Anistar and check but IF IT STILL doesn't work... there must be something else . Sorry for the long comment.