Why don't you just switch to another Bank?
They are all highly regulated and with very little incentive to innovate. So they can screw around and do pretty much nothing at all. The fascist/socialist banking system that exists across the globe is even more pronounced here.
For those of you that can read portuguese, I recommend this article: http://www.mises.org.br/Article.aspx?id=1387
I have accounts on three banks that work well with Ubuntu and Firefox. Only one of them mandates a Java runtime to be installed (and only enforces the requirement on Windows and OSX).