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-G920F
Software version: 33.8
Waiting ADB device... OK
Reading phone info...
Model: SM-G920F
Android version: 6.0.1
PDA version: G920FXXU5DQA8
CSC version: G920FOXE5DQA3
Phone version:
Product code:
CSC country code: Russia
CSC sales code: SER
Phone SN: RF8G400640P
IMEI:
HW version:
RF cal date:
Chip name: EXYNOS7420
Modem board:
Security patch: 2017-01-01
Boot Warranty bit: 1
Checking Super user right... true
Reading NV data... OK
Checking NV data... OK
Reading data... OK
Detecting MODEM... OK
Reading MODEM... OK
Calculating... error (0 6)
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (0)
Try downgrade modem if possible
Done with Samsung Tool PRO v.33.8
help pls to fix this problem
thx
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-G920F
Software version: 33.8
Waiting ADB device... OK
Reading phone info...
Model: SM-G920F
Android version: 6.0.1
PDA version: G920FXXU5DQA8
CSC version: G920FOXE5DQA3
Phone version:
Product code:
CSC country code: Russia
CSC sales code: SER
Phone SN: RF8G400640P
IMEI:
HW version:
RF cal date:
Chip name: EXYNOS7420
Modem board:
Security patch: 2017-01-01
Boot Warranty bit: 1
Checking Super user right... true
Reading NV data... OK
Checking NV data... OK
Reading data... OK
Detecting MODEM... OK
Reading MODEM... OK
Calculating... error (0 6)
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (0)
Try downgrade modem if possible
Done with Samsung Tool PRO v.33.8
help pls to fix this problem
thx
