SM-J400f u4 modem not supported [Answered]

[gsmhuda]

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'-'Software information'
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.

To backup/restore QCN, phone diagnostic port must be enabled.
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. Select diagnostic port in port settings.
5. Press 'Read QCN' button to read NV backup or 'Write QCN' to restore.

Operation: Read CERT
Selected model: SM-J400F
Software version: 37.0

Waiting ADB device... OK
Reading phone info...
Model: SM-J400F
Android version: 9
PDA version: J400FXXU4BSF5
CSC version: J400FODM4BSF3
Phone version: J400FXXU4BSF2
Product code: SM-J400FZKDBKD
CSC country code: Bangladesh
CSC sales code: BKD
Phone SN: R28K91KL32X
IMEI: 35906909049xxxx
HW version: MP 0.300
RF cal date: 20180917
Chip name: EXYNOS7570
Modem board: SHANNON305
Security patch: 2019-07-01
Boot Warranty bit: 1
SIM State: ABSENT,ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... modem not supported
Searching server... OK
Checking available files... not found compatible file
KNOX WARRANTY VOID is 0x1. Phone is not supported

Done with Samsung Tool PRO v.37.0

[aleksa55]

modem CP for unlock
CP_J400FXXU4_ENG

but u have KNOX WARRANTY VOID is 0x1 and phone is not supported

[aleksa55]

original CP

CP_J400FXXU4BSF2_CL1108370_QB13148698_SIGNED.tar