iwlwifi-135-6.ucode (not found?)

iwlwifi 0000:03:00.0: request for firmware file 'iwlwifi-135-6.ucode' failed.
iwlwifi 0000:03:00.0: no suitable firmware found!


Bug#758219: linux-image-3.2.0-4-amd64: Unable to use iwlwifi 8086:0892, misdetected RF_KILL bit