Solucion:
for those of you having wifi problems (probably everybody), google "Flashing KDZ on LG L5 II" and start reading from page 14 of the xda thread (you're gonna need root your phone, there's a thread for that too). Also I think there are several mods now that can improve the user experience like the [e450]MODIFIED STOCK(Optima Team) MOD.
Os dejo el enlace directo a la pagina 14 del hilo de thread que indican:
http://forum.xda-developers.com/show...409308&page=14