meaning i dont have my xbox on the net at all so a sliver account is still out of it.
From a vague memory, you may be able to find and download the patches on your PC (I'm presuming you're posting here from a PC you have connected to the net) and burn them to a disc which you then use to patch the game. I could be wrong about this as my 360 is connected to the net, which means I've not had to try to check/test what I've mentioned out.
I'll do a check on the xbox site and see if I can confirm what I think I seem to remember.
Edit: Of course from the quick search of the xbox site, I did find that you could update the xbox itself via that method but not whether you could apply patches the same way or not.