Hi, I recently purchased a LT 3.0 Xbox 360 (with a Ben-Q drive) and burnt off the two disc Fallout New Vegas Ultimate Edition set. The first (game) disc is fine but when i put in the install expansion disc it brings up a message saying "An update is required to install this expansion pack. Update now?" and wont let me get past that point. What will happen if i install this update, will it affect my flashed firmware?