I had asked this question before as well. I also want to see 480mb USB. It appears that it is on Paul's list of things to do but not right up there in the "immediately work on this" category. So, for now we wait. Or, if you're interested in doing it, the specification for the processor is easy to find and the existing code is open source so perhaps some people could band together and try to get it done. However, USB is a complicated beast and not easy to get into for programming.