You can't downgrade on a locked boot loader. Flashback yo stock KitKat using RSD. Root with towelroot and unlock with Motocopalypse. Downgrade using house of moto universal script. Search google for house of moto.
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Motorola Droid Razr M Unlocked on Team Gummy Nightlies 4.4.4
Archos G9 101 Developer Edition on Cyanogenmod 11 4.4.3