Is it still possible to mod the UserSettings file in L4D?

I know these mods can't be used online anymore, however, even after clearing my cache and staying offline, every time I use a modded save I get a "Disc unreadable" error, however when I load a legit one I don't get this error? Is there any way around this or will it just have to be done legit? All I really want is God Mode and disable survivors.

Cheers.

 

l4d 1 or 2? here is iso mods for 2

http://www.xpgamesaves.com/topic/34241-left-4-dead-2-iso-mods/

 

I meant 1, thanks anyway though. If there's no way of doing this by save editing looks like I'll have to rip my Xbox apart and hotswap it.

 

there is a way to do it. i have a file that is already modded if you would like it.

b button should be god mode and infinite ammo
http://www.mediafire.com/?pqthdns2g3fv4uo