Wizzzard;
With your Xbox online, starting the game should automatically check for an update, and prompt you to download the patch. For the PC version, check
here.
Starbuck1951;
You can download Xbox firmware updates on a computer and copy them to a USB drive or CD/DVD-R to update it. For patches, though, I think you need to get the Xbox online. Can you bring it to a friend's house, string a long ethernet cable to your router, or hook it up to a PC/laptop with Internet Connection Sharing, etc?
Try emailing support@larian.com. They can not get around MS' patch distribution restrictions, but with your save they may be able to summon the demon on an updated system, save and return that save file, assuming the patch didn't introduce any save format changes.
See Lar's post
here on how to send them an Xbox save.
Welcome to the forum.
