I downloaded the Filesyscheck.cfg replacement to use custom weapon skins and sound mods on my private CoD4 server. The installation was straightforward — just dropped it into the players/profiles/[your profile] folder, and the game stopped reverting my changes. No more “file mismatch” errors!
Would you like help setting up a private CoD4 modded server instead? Filesyscheck.cfg Call Of Duty 4 Download