Code:
REPAIR 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. Fill values what you need to repair.
5. Press 'Repair' button.
6. Press 'Reset EFS' if you need to reset it.
Be carefully, do not perform this without necessity and make backup before.
7. Press 'Disable Factory Mode' or 'Patch Sertificate' if needed.
Operation: Patch Certificate
Selected model: SGH-T399N
Software version: 20.0
Waiting ADB device... OK
Reading phone info...
Model: SGH-T399N
Android version: 4.4.2
Product code:
Phone version: T399NUVUANK3
PDA version: T399NUVUANK3
CSC version: T399NTMBANK3
CSC country code: USA
CSC sales code: TMB
HW version:
Phone S/N: RV8G11FF92T
Modem board: SS222
RF cal date:
IMEI: 350695200123951
Checking Super user right... true
Reading modem... OK
Patching modem... OK
Writing modem... OK
Rebooting phone... OK
Patching CERT check... done
Done with Samsung Tool v.20.0