This is the latest patch for Call of Duty 4: Modern Warfare. This patch is incremental - it requires the game to be patched to v1.6 first.
Call of Duty v1.7 fixes : Fixed an exploit that allowed players to access certain console dvars during multi-player matches. Fixed a crash that could occur when a Chinatown Sabotage match would go into over-time. Fixed a bug where the MP icons showed up in English on multilanguage installs.