Is there anyways to unlock bootloader of shv-e330s?

I want to downgrade to 4.2.2 but I can't find the PDA in my phone only the 4.4.2 has the exact PDA in my phone, I was downloading some stock firmware on sammobile and Samsung updates but still only 4.4.2 has exact to my phone and there is no 4.2.2 available for my phone, so I've read some forums that GT i9506 is bootloader unlocked and the i9506 and I've heard some people that shv -e330s is same with i9506. And other variants of s4 is bootloader locked. So is it possible that I can downgrade 4.2.2 from 4.4.2? My s4 is shv-e330s

This was my phone firmware:
http://ift.tt/274tiQv

And this I want to downgrade:
http://ift.tt/274tiQx

Sent from my SHV-E330S using Tapatalk

from xda-developers http://ift.tt/24EAP6B
via IFTTT