I've tried about eight usb's but the box won't recognise any of them. Their all formatted with the correct file name but it's still not having it, it just wont recognise any of them. I also tried the connection on the back. I always use the usb to upgrade to the latest updates but the last one a few months ago wouldn't work, so i guess the problem was already there, just seems strange that i can still copy on to the sticks. Anybody else had this problem and know how to fix it. I'm trying to load the custom software but i think it's just not meant to be.