A community-sourced tip also suggests that if the above method doesn't work, you should back up your players folder (located in the game's root directory). This folder contains your game settings and profile. After changing the language in Steam, you might need to delete the existing configuration files inside the players folder to force the game to generate fresh ones in English.
If the Steam method fails (e.g., the region lock is hardcoded into the key), you will need to manually replace the game zone files. This is the "classic" method often found on community forums. call of duty black ops 2 pc english language pack best
Understanding the file structure is key to a successful manual installation. The game's data is compartmentalized: A community-sourced tip also suggests that if the