need help sm-g850y phone sn 0000000000 i need efs backup, emergency call only octoplu

please i need efs backup to try fix emergency call only.

my tools:
octoplus only.

i try:
write certs, with no solution

Plataforma: Samsung Android
Puerto seleccionado: COM68
Modelo seleccionado: SM-G850Y
Searching for a phone. Please wait…
Please, press "OK" button on the phone to allow USB debugging..
Phone found.
Fecha de creación del firmware: Thu Sep 11 15:42:22 KST 2014
PDA version: G850YDOU2ANI1
CSC version: G850YCHE2ANHB
Versión del SW: G850YDOU2ANI2
IMEI del teléfono: 356010069814431
Phone SN: 00000000000
Android version: 4.4.4 (KTU84P)

signal is full
detect the sim card
i can view the networks, but i can not registri.
imei its not reported