[Q] Lollipop sim unlock

[shadow2by4]

I have a rooted, unlocked i537 on stock 4.2.2, honestly don't remember how I unlocked it and can't find the method, I did it for my mom a long time ago and just traded her my ZTE Zmax because she can see it better. Anyway, is OC6 SIM unlockable via the same method, or is there a way to retain unlock along with root?