Warning for who trying to downgrade lollipop to lower version for lenovo a5000

Found on latest android versions for lenovo a5000 , Lollipop 5.0.2 some echos like loosing some features like security app , Lags and bugs with games and apps  , So some people decided to downgrade for getting the better experience at the original system Kitkat 4.4.2 , But hey don't try to do that because you will face very slow touch experience , So better to keep lollipop at your a5000 ,
Or if you still have the kitkat so keep it until they fix the lollipop errors ,

But what if i already downgrade my lollipop System Tomorrow i will show you soulotions for this errors and bugs