amigos me llego a mi negocio un samsung i9505 que sale solo llamadas de emergencia pero no esta en la lista negra y cuando lo conecto a la z3x y le doy reparar efs sale un error y no me deja continuar y espero que alguno me pueda ayudar en este caso, y genero esta pregunta si le escribo un certificado de otro telefono sera que la efs se repara? amigos espero pronto sus respuestas

BROO,,,este Samsung es new o esta funcionando,,___????cheka escribir QCN....

el no esta reportado pero sale solo llamadas de emergencia y la z3x me dice qwue la efs esta corrupta

REPAIR INSTRUCTIONS:

Repair IMEI/Serial/BT/WiFi/Product Code:
1. Power on the phone.
2. Type *#0808# and select 'DM+MODEM+ADB'.
3. Reboot phone.
4. Connect USB cable, install drivers if needed.
5. Select Samsung diagnostic port in port settings.
6. Press 'Reset MSL' button to deactivate security.
7. Wait till phone reboot.
8. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
9. Fill values what you need to repair.
10. Press 'Repair' button.

Reset EFS, Disable Factory Mode:
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. Press 'Reset EFS' if you need to reset it.
Be carefully, do not perform this without necessity. Backup will be created automatically.
5. If you have yellow table on your device screen, then press 'Disable Factory Mode' button.

Wipe EFS/NVM:
If you have 'IMEI null/null' or 'Phone baseband unknown' errors,
Then you can try to repair this errors with this function.
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. To use 'Auto backup/restore QCN' function (recommended):
Type *#0808# and select 'DM+MODEM+ADB'.
Type *#9090# and select 'DM/DUN over HSIC'.
Or you can disable this function and use ADB only.
4. Connect the phone to PC with USB cable, install drivers if needed.
5. Choose diagnostic port in port settings if 'Auto backup/restore QCN' is not skipped.
6. Press 'Wipe EFS/NVM' button.

Operation: Reset EFS
Selected model: GT-I9505
Selected port: COM38 SAMSUNG Mobile USB Serial Port ,
Versión de Software : 20.5

Esperando dispositivo ADB... Listo
Leyendo información del teléfono ...
Modelo: GT-I9505
Versión de Android: 4.3
Código del Producto: Not Active
Versión del telefono: I9505VJUEMKE
Versión PDA: I9505VJUEMKE
Versión CSC: I9505UWAENB1
CSC country code: COLOMBIA
CSC sales code: COM
HW version: Not Acti
Teléfono S/N: 0000000000
Modem board: MDM9215M
RF cal date: NONE
IMEI: 353652006326558
Verificando derecho de Super Usuario... verdadero
Backuping EFS... error (1)
Restaurando EFS... error

Hecho con Samsung Tool v.20.5