Jarrett

Hi, i just bought a xbox today and it came with the two months of xbox live
and the star wars tetris games. I try to connect online and says that it
needs to update. I when it goes to update it resets and the bar movies like
2 times before it tells me that it is unable to update due to techical
difficults. I called my cable company and they said everything is fine with
the internet. That is true. What could the problem be?