If you use SPFT.
https://www.youtube.com/watch?v=fywPVpFKTLg--------From this video I base myself to flash it.
In the 3:05 minute he says of some boxes that should not be checked, and that in the second flash I remember that I marked them thinking that it would be better ... I do not remember very well, it already has half a year of that time and the truth was newbie in these aspects.
Right now I try to do the same as the video but the cell phone doesn't recognize me anymore, it connects and disconnects and it doesn't give me a chance to do anything.