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. 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'.
4. Connect phone to PC with USB cable, install drivers if needed.
5. Choose 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: COM1 Communications Port,
Software version: 21.0
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: G900FXXU1BOC7
PDA version: G900FXXU1BOC7
CSC version: G900FO2U1BOC1
CSC country code: UK & IRE
CSC sales code: O2U
HW version:
Phone S/N: RF8F40243FE
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.21.0
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