REFERENCE SAMSUNG GT-I9300 IMEI problem Done by Z3x box

[PCdote]

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. Enable 'USB debugging' in 'Settings'-'Developer options' for Android 4.0 - 4.1.2 or
tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options' in Android 4.2+.
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: Patch Certificate
Selected model: GT-I9300
Software version: 33.2

Waiting ADB device... OK
Reading phone info...
Model: GT-I9300
Android version: 4.0.4
PDA version: I9300XXALEF
CSC version: I9300OLBALE6
Phone version: I9300DXLE9
Product code: Not Active
CSC country code: PHILIPPINES
CSC sales code: SMA
Phone SN: RV1CC17654N
IMEI: 354245054196533
HW version: REV__
RF cal date: none
Chip name:
Modem board:
Checking Super user right... true
Reading modem... OK
Patching modem... OK
Writing modem... OK
Reading kernel... OK
Rebooting phone... OK
Patching CERT check... done

Done with Samsung Tool PRO v.33.2