This solution is working on J250F BIT2 (all security patches) including J250FXXU2ARI1
1) Download EngModem file and Unzip it !
2) Swtich phone to D/L Mode by SamKEY or manually (Volume Down + Power + Home)
3) Select J250F_EngModem_BIT2.tar in PATCHED ODIN (Select as CP) and Press Start in ODIN
4) Read Codes with SamKEY
sm-j250f binary2
TESTED 3 CR
Searching for SAMSUNG Mobile USB Modem...OK
SAMSUNG USB Modem detected on [COM26]
Looking for DEVICE...OK
Reading USB MODEM information...OK
MODEL : SM-J250F
VER : J250FXXU2ARK1/J250FOJV2ARK1/J250FXXU2ARC3/J250FXXU2ARK1
IMEI : 357112091731671
S/N : RV8K31Q81Q
U/N : CQE0005B0CEDA35
Algorithm : MSM Crypto Engine
Loading ADB module......OK
Starting ADB module...OK
Searching for SAMSUNG ADB device...OK
Checking device authorization...OK
Reading ADB device information...
Device Model : SM-J250F
ADB Serial Number : 05B0CEDA
AP Ver : J250FXXU2ARK1
CP Ver : J250FXXU2ARC3
CSC Ver : J250FOJV2ARK1
Android Ver : 7.1.1
Debug Level : HIGH [0x4948]
CP Debug Level : OK [0x5500]
Writing applet to device...OK
Starting RIL applet...OK
Verifying IMEI via RIL...
IMEI : 357112091731671
Launching CP CRASH...[ALG:1]...OK
Waiting for UPLOAD MODE...[COM3]...OK
Preparing to read data...OK
Reading RAM data...[S1:OK]..[N2:OK]..[N3:OK]...OK
Rebooting device to NORMAL mode...OK
Searching security key...OK
Searching HASH signature...[HSU:NA]...OK
Searching security HMAC...OK
Calculating...[IDX1:OK]...[HASH:OK]...[PLN:OK]...OK
Sending data to SERVER...OK
Waiting for SERVER response (may take few minutes)...OK
Sending unlock codes to phone...[ACK:1]...[ACK:2]...OK
Operation successful.
1) Download EngModem file and Unzip it !
2) Swtich phone to D/L Mode by SamKEY or manually (Volume Down + Power + Home)
3) Select J250F_EngModem_BIT2.tar in PATCHED ODIN (Select as CP) and Press Start in ODIN
4) Read Codes with SamKEY
sm-j250f binary2
TESTED 3 CR
Searching for SAMSUNG Mobile USB Modem...OK
SAMSUNG USB Modem detected on [COM26]
Looking for DEVICE...OK
Reading USB MODEM information...OK
MODEL : SM-J250F
VER : J250FXXU2ARK1/J250FOJV2ARK1/J250FXXU2ARC3/J250FXXU2ARK1
IMEI : 357112091731671
S/N : RV8K31Q81Q
U/N : CQE0005B0CEDA35
Algorithm : MSM Crypto Engine
Loading ADB module......OK
Starting ADB module...OK
Searching for SAMSUNG ADB device...OK
Checking device authorization...OK
Reading ADB device information...
Device Model : SM-J250F
ADB Serial Number : 05B0CEDA
AP Ver : J250FXXU2ARK1
CP Ver : J250FXXU2ARC3
CSC Ver : J250FOJV2ARK1
Android Ver : 7.1.1
Debug Level : HIGH [0x4948]
CP Debug Level : OK [0x5500]
Writing applet to device...OK
Starting RIL applet...OK
Verifying IMEI via RIL...
IMEI : 357112091731671
Launching CP CRASH...[ALG:1]...OK
Waiting for UPLOAD MODE...[COM3]...OK
Preparing to read data...OK
Reading RAM data...[S1:OK]..[N2:OK]..[N3:OK]...OK
Rebooting device to NORMAL mode...OK
Searching security key...OK
Searching HASH signature...[HSU:NA]...OK
Searching security HMAC...OK
Calculating...[IDX1:OK]...[HASH:OK]...[PLN:OK]...OK
Sending data to SERVER...OK
Waiting for SERVER response (may take few minutes)...OK
Sending unlock codes to phone...[ACK:1]...[ACK:2]...OK
Operation successful.