Default Doubt G2 LG ls980

Hello brothers, I have a little doubt. I'm really loving the LG smartphone, since now I'm thinking about changing my LG optimus g PRO, for G2 LG ls980. Well, I had read many topics on this model G2, and say there is no unlock for it through IMEI, now my question is: Is it possible to unlock LG LS980 G2 via IMEI, and android 4.4.2?

Another question: how to put android 4.4.2 ls980?

I await your response, and if I can help much better. Thank you very much!