LG Flex D950 From AT&T , can be flashed with D958?

I have bought an Unlocked LG Flex D950 (AT&T) and I am in the middle east where "I believe" D985 is the right model. Is it possible to flash D958 to my D950?

(I have the D95810c_00.kdz, but afraid if I flash it something wrong will happen)

If the answer is yes then elaboration is greatly appreciated, like how or a reference to a thread that can guide me.