I started a thread about this. Unfortunately I am on my blackberry at the moment so cannot link the thread. Search "Nokia will not take my money: worst customer services in the world".

Answer to your question is that Nokia will not fix the usb, not for all the money in the world. When they get phones with faulty usb they actually do not fix them. They just replace them. So if you are out of warranty you are left with a dead device (assuming you have bricked it and so need to reflash).

Have not read through whole thread but why don't you get it fixed under warranty?