g900h imei null

[mahi20015]

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 'Read CERT' button to read certificates or 'Write CERT' to restore.
7. Press 'Write NV DATA' if you need to restore NV backup.

Operation: Write CERT
Selected model: SM-G900H
Software version: 28.2

Checking CERT file... Ok
KEY ID: 0499
Waiting ADB device...
Please, allow USB debugging on phone... Ok
Reading phone info...
Model: SM-G900H
Android version: 4.4.2
Product code:
Phone version:
PDA version: G900HXXU1ANH1
CSC version: G900HOJV1ANJ1
CSC country code: IRAN
CSC sales code: THR
HW version:
Phone SN:
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.28.2

[mahi20015]

which version is good for write cert?

z3x box tools version?