I need help unlocking everything in MW2

All day I've been going into CFG lobbies and unlock all lobbies but it never unlocks anything for me
I have an unlock all.cfg file on my USB in the right port and still nothing unlocks
Can anybody host a challenge lobby or tell me how to unlock everything? I'm kind of new to this kind of hacking and I don't understand why it isn't giving me everything
Just to be clear I'm looking to get fall camo and all attachments for every gun, all titles and emblems, and all challenges complete

3 Days and no-ones posted ? Huh.

Well this is how it goes. You need somone or you with a cfg mod menu.
Inside the menu you need this code "Exec../../dev.usb000/UnlockAll.cfg"
It can easily be put into a menu using Notepadd++ for easier edit.

Once you get the infection, go to split screen make a profile. turn playstation network unlocks on and start the game. If all goes well the game will disconnect and youll be back in the main menu.

Hope this helps you op.