G925F Help Repair

Hi guys can please someone explain me how to fix this phone ?:confused:
Phone came from other shop and I think all messed up .
So no imei and no modem , flashed 6.0.1 full fw ,rooted ok , flashed twrp , flashed Space x kernel and last flashed 5.1.1 modem.
If I reset efs imei is 3500000…
But after write efs from good phone I have back no imei and modem and impossible to write cert error 1 security ….
Thanks for your assist .


Operation: Write CERT
Selected model: SM-G925F
Software version: 25.9

Waiting ADB device… OK
Reading phone info…
Model: SM-G925F
Android version: 6.0.1
Product code:
Phone version: G925FXXU3COJ6
PDA version: G925FXXU3DPAD
CSC version: G925FOXA3DPAD
CSC country code: France
CSC sales code: XEF
HW version:
Phone S/N:
Modem board: SHANNON333
RF cal date:
Checking Super user right… true
Initializating zTool… OK
Running zTool, please wait…
Start… OK
Init… OK
Generate and check client proof… OK
Verify proof by client… OK
Reading data… OK
HWID: 08 83 33 0C E7 06 00 00 00 00 00 00 00 00 00 00
Checking certificate file… OK
KEY ID: 0346
Reading nv data… OK
Checking NV data… error
Security damaged (1)
Done with Samsung Tool PRO v.25.9