I have an old xbox 360 phat version and me and my friend had hooked it up but not connected to the internet and there were some problems with the disk drive well anyway when we hooked it up it updated on its on. but my question is are there anyway i can jtag it and do a downgrade and it a xenon just curious to see if you can do that ive herd about the rgh hack but i just need to know what to do first and so on. if it is possible.