Just (i hope) Bricked ZTE Kis Plus

Hi! Nice to meet you all!
Today, i tried to change firmware of my ZTE Kis Plus. But... I probably made something really reaaaly wrong.

I used this tutorial (i am new here, so i can't add links :), just put youtube adress before this) "watch?v=n_DJhaNH14o" I though lite and plus was same models :p ... Anyway.. My phone won't start now. I tried to install xperia v2 rom. In half of instalation, my display turned off, so i waited for a while. After 3 minutes phone restarted and.... game over.

Here are some details about my phone

Model : ZTE Kis Plus

Rooted : Yes

What i did to my precious? : Wel... I tried to make him looke cooler with custom firmware (link is few lines up)

What i tried? : Well... Pretty much nothing. I have some experience with Blade and some MTK Devices. But zte kis? Nope, i am lost here.

Other details : I can't get even to recovery menu. If i connect phone to pc with usb cable, classics "charging" animation shows up normally.
I tried to recort video what happen if i try to turn phone on.
(i am new here, so i can't add links :), just put youtube adress before this) watch?v=KpF9yvise44

If anybody have any questions about my stupidity, i try to answer them ASAP.

Also, sorry for my horrible english.

Thankies my dear mobile masters!

Ps, i leave this here as a welcoming gift :)

Low light combat : humblebundle.com/s?gift=qxyDEBYc6AcB

Canabalt (steam) : 7P75X-M8X43-KLE7A