[Q] Its posible unlock sprint lg g3 for gsm carriers? topic

Hi guys, thank you very much for the power of knowledge through this forum.

I am from Nicaragua and I wonder if anyone can help me or guide as to the next request.

I am interested in buying a SPRINT LG G3 LS990 on ebay.
Like this (www ebay com/itm/LG-G3-LS990-Latest-Model-32GB-Metallic-Black-Sprint-Smartphone-/161517862046?pt=Cell_Phones&hash=item259b36fc9e)

The sprint model has lower price than international versions, so I wonder if there is a way to make it work in GSM networks like Movistar, Claro etc ...
Please could someone help me to unlock it to gsm networks?

Thanks and sorry for the bad English, use google translator :)

Thanks!

[Q] is it posible to port kitkat 4.4.2 to jelly bean 4.2.2? topic

I have a lenovo a680 row

This is the specs

1.3ghz quad core
Mtk6582
1gb ram
4gb internal
JB 4.2.2

I want to port a 4.4.2 kitkat rom to 4.2.2 jelly bean so i can flash it in my phone,

Is it posible?,if it is posible please teach me how can i do it,hope someone post a tutorial/guide on how can i do it


Thanks in advance