Re: How can i downgrade my lenovo A7000 which came with lollipop 5.0 to kitkat.
Welcome to Android Central! You'd have to root the device and install either the stock KitKat ROM (if it ever existed for that device, which might not be the case if it came with Lollipop), or a custom KitKat ROM designed specifically for the device. Try searching xda-developers.com, which is generally a better place to find solutions for this kind of thing.