first i would strongley sugest you read the stickys. because if you did you would have you'r answer and have no need to post on this subject.
but i'm feeling generous today so here is the answer most xbox games don't have individual patches like some other consoles do so you must use a patch engine.
the best one around can be found in the tools section of a programme called iso craxtion. download a newer version of this programme and use the patcher it's not difficult' just select the default.exe and press patch.
download from here.
www.xbox-newz.de
or
www.xbox4fun.com
you can use the update function on iso craxtion to chech for and download newer versions