Some European or Japanese disc editions do not contain English audio on the disc. In this rare case, you cannot add a free pack via console; you would need to buy an English-import disc.
: Downloading specific .iwd files like localized_english_iw07.iwd . Call Of Duty Modern Warfare 3 English Language Pack Free
Make sure to check the compatibility of the language pack with your game version and platform before installation. Some European or Japanese disc editions do not
Open My Games & Apps , select MW3 , and choose Manage game and add-ons . Go to Manage installation to find and select additional language packs for download. Manually Changing Language via Game Files Call Of Duty Modern Warfare 3 English Language Pack Free