I have T-mo too, as well as the 8320.
First of all, I can't believe you have miniOpera working for you. Sheesh in the 2+ months I've been with my "new love" I have not been able to get miniOpera to work, not even close.... so I just gave up on it... lol... Anyway, on another note... For your problem, try this:
Log in to your T-mobile account.
Scroll down to the bottom left where it says: Setup BlackBerry Internet e-mail >
and then click on it.
On the left, click on Service Books
When you get there, in the middle, and in the red box... click on Send Service Books
Hope that works for you! It sure did for me!