Was going to start a thread but found yours.
Since I have an X1, I gave my daughter, 4yr old, my 360 slim. It has a 250gb HDD. I wanted to up load movies to it via usb stick but it would not let me. I searched the internet and they say it can't be done after the latest dashboard update. I tried to swap memory to the external drive. When I went into the hard drive I can press "Y" for options. There I can swap memory via usb. But then is no "Y" option for the USB or "external drive" to swap back to internal drive.
I read that you can hack the 360 and use it as a media device but you cant go online with it. Does anyone know how to upload movies to the 360? I have a 250gb that I can't use.