G925f how to fix IMEI: 350000000000006?

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. Select device in ADB settings.
5. Press 'Read EFS' button to read backup or 'Write EFS' to restore.
6. Press 'Write CERT' to restore certificates.
7. Press 'Write NV DATA' if you need to restore NV backup.

Read certificate operation:
1. Power on the phone.
2. Connect the phone to PC with USB cable.
3. Check Samsung modem in device manager, install drivers if needed.
4. Press 'Read CERT' button to read certificates.

Read certificate via diagnostic port:
1. Power on the phone.
2. Type *#0808# and select 'DM+MODEM+ADB'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Press 'Read CERT DIAG' button to read certificates.

Operation: Write CERT
Selected model: SM-G925F
Software version: 31.1

Waiting ADB device... OK
Reading phone info...
Model: SM-G925F
Android version: 6.0.1
PDA version: G925FXXU5DQA7
CSC version: G925FBTU5DQA2
Phone version: G925FXXU5BPK2
Product code:
CSC country code: UK & IRE
CSC sales code: BTU
Phone SN:
IMEI: 350000000000006
HW version:
RF cal date:
Chip name: EXYNOS7420
Modem board: SHANNON333
Security patch: 2017-01-01
Boot Warranty bit: 1
Checking Super user right... true
Reading NV data... OK
Checking NV data... error
Security damaged (1)

Done with Samsung Tool PRO v.31.1