update Xbox 360 slim no wifi

Okay sadly i have no wifi :'( routers messed up, and i have xbox 360 slim, NO harddrive yet using a usb with 1.2 gig's left, i want to update cod ghosts, minecraft and blacl ops anyone know how to do that with a usb on computer??? help please

You can only update the 360 itself by USB, game updates have to be done over Xbox Live. If your router is not working you can do a direct ethernet connection to your modem, but if you're not playing online then there is probably not much of a reason to update your games.