I just tried to get on live after working this summer (xbox hasn't been used in 3 months), and there was an update that needed to be applied. I went ahead and started the download, but it failed with this message:
Can't update your console. Please visit www.xbox.com/support.
Status Code: 3151-351F-B380-0402-C000-0001
This xbox is 4 years old, and was a replacement that Microsoft sent to me when the optical drive failed in my original 360. I called support, and it was explained to me that this error code means that the xbox hardware has been tampered with, but I know for sure that I have never done that. My console is banned from connecting to live. I play 2 games regularly, which I own. Therefore, I would have no need to tamper with it.
Is it possible that the replacement (which was obviously refurbished) had been tampered with by the previous owner and been sent to me? Can I send my xbox in to show that it hasn't been tampered with?