: The primary purpose of this official update was to strip out PunkBuster , the game’s original anti-cheat software, which had become obsolete and non-functional.
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. While Infinity Ward ended official support with Patch 1.7, the community developed 1.8 to modernize the game and keep the multiplayer experience alive. Core Purpose and Features : The primary purpose of this official update
Servers running 1.8/CoD4x are generally backwards compatible with 1.7 players, though many servers now require the 1.8 client for a stable experience. The "Fractured" Community the game’s original anti-cheat software