Still need help with Reverting back to Kitkat on S5

So I posted a thread the other day to try and find help with my S5 I just got, yet no avail. So I'm here again, trying a new one to see if it gets me anywhere. The problem is this, I believe my phone is un-able to revert to Kitkat, because Kitkat was never on it in the first place. It came stock, out of the box with Lollipop. So I'm looking for anyway to get it to Kitkat, even if I have to brick the darn thing by removing the bootloader and everything on the phone to load in stock kitkat. So any advice or questions would be so very helpful. I'm going crazy trying to find a solution! Please help!