sm-n7505 imei null

[android unbrik]

hi

i have sm-n7505 imei null. can i fix this z3x pro? write efs, try to write cert, but faile

here is log


BACKUP INSTRUCTIONS:
Phone must be rooted!
If the software can't root the phone automatically,
then you must root your device manually.
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Press 'Read EFS' button to read backup or 'Write EFS' to restore.
5. Press 'Read CERT' button to read certificates or 'Write CERT' to restore.
6. Press 'Write NV DATA' if you need to restore NV backup.

Operation: Write CERT
Selected model: SM-N7505
Software version: 21.8

Checking certificate file... OK
KEY ID: 0028
Waiting ADB device...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SM-N7505
Android version: 4.4.2
Product code:
Phone version:
PDA version: N7505XXUCNH1
CSC version: N7505OJVCNH2
CSC country code: KSA
CSC sales code: KSA
HW version:
Phone S/N:
Modem board:
RF cal date:
IMEI:
Checking Super user right... true
Reading nv data... OK
Checking magic... SSNV not found

Done with Samsung Tool PRO v.21.8