Hi, i have a Samsung G955u from At&t Usa, i tried to unlock using samtool. its bin 8, i first got this error
SAMSUNG Mobile USB Modem [COM8]...OK
Reading USB Modem device info...OK
MODEL: SM-G955U
IMEI: 3577xxx225106 <-- IMEI WAS OK
SN: R38J809HFCB
UID: 98899B413954455135
SWVER: G955USQS8DTJ1/G955USQS8DTJ1/G955USQS8DTJ1/G955UOYN8DTJ1
Reading SAMSUNG ADB device info...
ADBSN: 98899B413954455135
DID: 205E737D7FF2
MODEL: SM-G955U
BOOTLOADER: G955USQS8DTJ1
MODEM VERSION: G955USQS8DTJ1
MODEM BOARD: MSM8998
ANDROID VERSION: 9
PRODUCT ABI: ARM64-V8A
CARRIER: ATT
SALE COUNTRY: USA
CPU: QCOM
SIM STATE: ABSENT
SIM CONFIG: SS
USB CONFIG: ACM,DIAG,ADB
Warranty Bit: 0
PHONE IS SUPPORTED!
Initializing Applet...OK
Reading MODEM security info...
CARRIER LOCK:
CAN NOT READ FROM DEVICE!
So i flashed combination and i read security again
SAMSUNG Mobile USB Modem [COM10]...OK
Reading USB Modem device info...OK
MODEL: SM-G955U
IMEI: 3577XXX225106
SN: R38J809HFCB
UID: 98899B413954455135
SWVER: FA70_G955USQU8ATG1/FA70_G955USQU8ATG1/G955USQU8ATG1
Reading SAMSUNG ADB device info...
ADBSN: 98899B413954455135
DID: 205E737D7FF2
MODEL: SM-G955U
BOOTLOADER: FA70_G955USQU8ATG1
MODEM VERSION: G955USQU8ATG1
MODEM BOARD: MSM8998
ANDROID VERSION: 7.0
PRODUCT ABI: ARM64-V8A
CARRIER: ATT
CPU: QCOM
SIM STATE: ABSENT
USB CONFIG: MTP,ADB
Warranty Bit: 0
PHONE IS SUPPORTED!
Initializing Applet...OK
Reading MODEM security info...
CARRIER LOCK: ATT
IMEI: 35xxxx322510 <--- IMEI STILL OK
MSLADDR: R38J80859G
Security Status: PASS
Switching to Upload Mode...OK
Waiting for device to Upload Mode...OK
Searching Upload Mode Port...
Phone Found on Port: COM14
Connecting to COM14...OK
Reading Device Security Area...
Security readed, verifying..OK
SEARCHING SECURITY FOUND
Read Security Successful! <- OPERATION OK
Exiting Upload Mode...OK
Afterf that i tried to write security and i got this
SAMSUNG Mobile USB Modem [COM10]...OK
Reading USB Modem device info...OK
MODEL: SM-G955U
IMEI: 357xxx3225106 <- IMEI STILL OK
SN: R38J809HFCB
UID: 98899B413954455135
SWVER: FA70_G955USQU8ATG1/FA70_G955USQU8ATG1/G955USQU8ATG1
Reading SAMSUNG ADB device info...
ADBSN: 98899B413954455135
DID: 205E737D7FF2
MODEL: SM-G955U
BOOTLOADER: FA70_G955USQU8ATG1
MODEM VERSION: G955USQU8ATG1
MODEM BOARD: MSM8998
ANDROID VERSION: 7.0
PRODUCT ABI: ARM64-V8A
CARRIER: ATT
CPU: QCOM
SIM STATE: ABSENT
USB CONFIG: MTP,ADB
Warranty Bit: 0
SEARCHING SECURITY FOUND
Restarting cp debug level low...OK
Waiting for device connect...OK
Initializing Applet...OK
Reading MODEM security info...
CARRIER LOCK: ATT
IMEI: 357XXXX22510
MSLADDR: R38J80859G
Resetting MSL Address...OK
Writing MslCode...FAIL!
Write Security Failed! <--- GOT THIS ERROR
and after that i got imei 000000 and i cant got it back
SAMSUNG Mobile USB Modem [COM12]...OK
Reading USB Modem device info...OK
MODEL: SM-G955U
IMEI: 000000000000000 <... IMEI BAD
SN: R38J809HFCB
UID: 98899B413954455135
SWVER: FA70_G955USQU8ATG1/FA70_G955USQU8ATG1/G955USQU8ATG1
Reading SAMSUNG ADB device info...
ADBSN: 98899B413954455135
DID: 205E737D7FF2
MODEL: SM-G955U
BOOTLOADER: FA70_G955USQU8ATG1
MODEM VERSION: G955USQU8ATG1
MODEM BOARD: MSM8998
ANDROID VERSION: 7.0
PRODUCT ABI: ARM64-V8A
CARRIER: ATT
CPU: QCOM
SIM STATE: ABSENT
USB CONFIG: DIAG,ACM,ADB
Warranty Bit: 0
SEARCHING SECURITY FOUND
Initializing Applet...OK
Reading MODEM security info...
CARRIER LOCK: SMD
IMEI: 00000000000000
MSLADDR: 0000000000
Resetting MSL Address...OK
Writing MslCode...FAIL!
Write Security Failed!
I already did stock again and tried to write no luck
Can any one now what to do??? Thx
SAMSUNG Mobile USB Modem [COM8]...OK
Reading USB Modem device info...OK
MODEL: SM-G955U
IMEI: 3577xxx225106 <-- IMEI WAS OK
SN: R38J809HFCB
UID: 98899B413954455135
SWVER: G955USQS8DTJ1/G955USQS8DTJ1/G955USQS8DTJ1/G955UOYN8DTJ1
Reading SAMSUNG ADB device info...
ADBSN: 98899B413954455135
DID: 205E737D7FF2
MODEL: SM-G955U
BOOTLOADER: G955USQS8DTJ1
MODEM VERSION: G955USQS8DTJ1
MODEM BOARD: MSM8998
ANDROID VERSION: 9
PRODUCT ABI: ARM64-V8A
CARRIER: ATT
SALE COUNTRY: USA
CPU: QCOM
SIM STATE: ABSENT
SIM CONFIG: SS
USB CONFIG: ACM,DIAG,ADB
Warranty Bit: 0
PHONE IS SUPPORTED!
Initializing Applet...OK
Reading MODEM security info...
CARRIER LOCK:
CAN NOT READ FROM DEVICE!
So i flashed combination and i read security again
SAMSUNG Mobile USB Modem [COM10]...OK
Reading USB Modem device info...OK
MODEL: SM-G955U
IMEI: 3577XXX225106
SN: R38J809HFCB
UID: 98899B413954455135
SWVER: FA70_G955USQU8ATG1/FA70_G955USQU8ATG1/G955USQU8ATG1
Reading SAMSUNG ADB device info...
ADBSN: 98899B413954455135
DID: 205E737D7FF2
MODEL: SM-G955U
BOOTLOADER: FA70_G955USQU8ATG1
MODEM VERSION: G955USQU8ATG1
MODEM BOARD: MSM8998
ANDROID VERSION: 7.0
PRODUCT ABI: ARM64-V8A
CARRIER: ATT
CPU: QCOM
SIM STATE: ABSENT
USB CONFIG: MTP,ADB
Warranty Bit: 0
PHONE IS SUPPORTED!
Initializing Applet...OK
Reading MODEM security info...
CARRIER LOCK: ATT
IMEI: 35xxxx322510 <--- IMEI STILL OK
MSLADDR: R38J80859G
Security Status: PASS
Switching to Upload Mode...OK
Waiting for device to Upload Mode...OK
Searching Upload Mode Port...
Phone Found on Port: COM14
Connecting to COM14...OK
Reading Device Security Area...
Security readed, verifying..OK
SEARCHING SECURITY FOUND
Read Security Successful! <- OPERATION OK
Exiting Upload Mode...OK
Afterf that i tried to write security and i got this
SAMSUNG Mobile USB Modem [COM10]...OK
Reading USB Modem device info...OK
MODEL: SM-G955U
IMEI: 357xxx3225106 <- IMEI STILL OK
SN: R38J809HFCB
UID: 98899B413954455135
SWVER: FA70_G955USQU8ATG1/FA70_G955USQU8ATG1/G955USQU8ATG1
Reading SAMSUNG ADB device info...
ADBSN: 98899B413954455135
DID: 205E737D7FF2
MODEL: SM-G955U
BOOTLOADER: FA70_G955USQU8ATG1
MODEM VERSION: G955USQU8ATG1
MODEM BOARD: MSM8998
ANDROID VERSION: 7.0
PRODUCT ABI: ARM64-V8A
CARRIER: ATT
CPU: QCOM
SIM STATE: ABSENT
USB CONFIG: MTP,ADB
Warranty Bit: 0
SEARCHING SECURITY FOUND
Restarting cp debug level low...OK
Waiting for device connect...OK
Initializing Applet...OK
Reading MODEM security info...
CARRIER LOCK: ATT
IMEI: 357XXXX22510
MSLADDR: R38J80859G
Resetting MSL Address...OK
Writing MslCode...FAIL!
Write Security Failed! <--- GOT THIS ERROR
and after that i got imei 000000 and i cant got it back
SAMSUNG Mobile USB Modem [COM12]...OK
Reading USB Modem device info...OK
MODEL: SM-G955U
IMEI: 000000000000000 <... IMEI BAD
SN: R38J809HFCB
UID: 98899B413954455135
SWVER: FA70_G955USQU8ATG1/FA70_G955USQU8ATG1/G955USQU8ATG1
Reading SAMSUNG ADB device info...
ADBSN: 98899B413954455135
DID: 205E737D7FF2
MODEL: SM-G955U
BOOTLOADER: FA70_G955USQU8ATG1
MODEM VERSION: G955USQU8ATG1
MODEM BOARD: MSM8998
ANDROID VERSION: 7.0
PRODUCT ABI: ARM64-V8A
CARRIER: ATT
CPU: QCOM
SIM STATE: ABSENT
USB CONFIG: DIAG,ACM,ADB
Warranty Bit: 0
SEARCHING SECURITY FOUND
Initializing Applet...OK
Reading MODEM security info...
CARRIER LOCK: SMD
IMEI: 00000000000000
MSLADDR: 0000000000
Resetting MSL Address...OK
Writing MslCode...FAIL!
Write Security Failed!
I already did stock again and tried to write no luck
Can any one now what to do??? Thx