Why I can upload Backgrounds, Avatars, etc. Using Opera Mini?

All we know that its almost impossible to change avatars, backgrounds, text colors , etc. on Twitter. Well...I have found a way to do it using Opera Mini on a Smarthpone. I don ́t know why but it really works for me!! I hope this info can help Twitter Staff to solve this problem. You can watch a video where I demostrate how I do it. (sorry for my english I am from Mexico). My video is here: http://www.youtube.com/watch?v=6fS7Eh... and Read my Blog where I describe this: http://elswordfish.blogspot.com/