sucessfully write cert done with king of box

[umera5zal008]

mobile was cal problem

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 or
press 'Write CERT' to restore certificates.

To backup/restore QCN, phone diagnostic port must be enabled.
1. Power on the phone.
2. Type *#0808# and select 'DM+MODEM+ADB'.
3. Type *#9090# and select 'DM/DUN over HSIC'.
Or use 'Activate Diag' function from 'Repair' tab.
4. Connect phone to PC with USB cable, install drivers if needed.
5. Select diagnostic port in port settings.
6. Press 'Read QCN' button to read NV backup or 'Write QCN' to restore.

Operation: Write CERT
Selected model: SM-G900F
Selected port: COM18 SAMSUNG Mobile USB Serial Port
Software version: 25.3

Checking certificate file... OK
KEY ID: 0478
Waiting ADB device... OK
Reading phone info...
Model: SM-G900F
Android version: 5.0
Product code: Not Active
Phone version: G900FXXU1BOD3
PDA version: G900FXXU1BOE3
CSC version: G900FXFV1BOE4
CSC country code: South Africa
CSC sales code: XFV
HW version:
Phone S/N: 00000000000
Modem board: MSM8974PRO
RF cal date: NONE
IMEI:
Initialization AT RIL... OK
Bypass MSL... OK
Checking for compatible phone and cert... OK
Phone KEY ID: 0478
Writing CERT... OK
Checking CERT status... OK
Rebooting phone... OK

Done with Samsung Tool PRO v.25.3