I was finally able to get Opera Mini installed this afternoon on my 7250. With the recent requests for the reqwireless browser, I thought I would share my success.
As you might know, Opera Mini was suppossed to be carrier only software intended for mobile users in Norway. Well, you know how the story goes. It has been leaked and now available from a number of places. It took me a while to get it properly installed, it seems the jad file a lot of people are hosting is incorrectly setup for BB. Nevertheless, I found a link to the low-memory version that works. http://atix.pp.ru/j2me/opera-mini/operalow.jad
There's also a high-memory version, but I couldn't get that one to download. Here's that link. http://atix.pp.ru/j2me/opera-mini/opera.jad
The biggest advantage to Opera Mini is Opera's small screen rendering technology and fast page loading. http://www.opera.com/products/mobile/operamini/
The bad news is it's a little resource hungry, so the UI isn't quite that snappy. So give it a shot and post back your results.
Now keep in mind Opera Mini is not designed or approved for any BlackBerry device. In my opinion, it really isn't ready for everyday use in this release. App load times can exceed 60 sec. and page loads are a little slow. I simply wanted to demonstrate the ability to get the browser running on BBs. Maybe future versions will be officially supported and we'll have a new browser alternative.
Oh and Opera Mini runs default in Norwegian, but you can change that to English in the "verktøy" menu under "instillinger" - change "språk" to English.