Default [Issues](C6903) NFC not working on CM based roms.

Could someone help me out, I downgraded my firmware rooted took a TA backup and re flashed back to KitKat to unlock the boot loader. Once done I flashed the boot.IMG of CM11 via fastboot straight from there and then via its recovery flashed CM11. Not only does my NFC not work hut also my camera is a hit or miss, sometimes working sometimes not.

Please if someone could help it would be much appreciated.