Not sure if this was the right forum to post this in. I have a xbox which is rgh'ed with XeXMenu 1.2 and XeXLoader in it. I have played games from my HDD. Although, I want to play Assassin's Creed multiplayer but xbox live asks me to do an update. I have the original copy of the game. Should I update?
No you shouldn't update, or ever connect to Xbox Live with your Jtag. Its the update bundled with the game its wanting to install. You need to build a new hacked update for your console: Follow parts 1 and 2 of this tutorial to dump your nand and get your current cpu key After build your nand with xeBuild GUI Now go back to part 4 of the tutorial here - 4. Flashing the new nand to the Xbox 360. Good luck!
So if I do that I can play in multiplayer through live? Also is there any harm that can happen to my xbox except voiding my warranty?
No, a Jtagged console will be banned from Xbox Live before it even connects. Also if you update the console from Xbox Live, or an update from a game disc you will brick the console. You have no warranty as your console has been opened and modified when it was Jtagged.
The same as i said in my post above, it works for Jtag / RGH hacks. Just be aware if you mess up when updating the console you will need to solder a usb nand flasher to the consoles motherboard to fix it.