I bought icloud locked iphone 5... hardware solution?

before you all state that I did something unlawful, I got ripped off on craigslist, I bought an Iphone 5 with a busted screen and I just found out thats its stolen... YES IS IT STOLEN... Am I a bad person? I don't think so... I have done transactions here on Macrumors forum, and I live in south america, and never had a single complain, Im a decent man.
I just spend my hard earn money, and I think I deserve a solution.

So here the question...

What if... BIG IF... I change the mainboard on my locked iphone 5... Will its still be Icloud locked ?
Or it will be not icloud locked?

thanks a lot !