Read of address 00000000 [Answered]
 

Operation: Info
Selected model: SM-N950U
Selected port: COM12 SAMSUNG Mobile USB Serial Port
Software version: 41.0

Exception: Access violation at address 00000000 in module 'SamsungToolPRO.exe'. Read of address 00000000

Done with Samsung Tool PRO v.41.0:confused:

hello
just follow manual inside software and check phone ADB drivers.
or update drivers using smart switch.

REPAIR INSTRUCTIONS:
1. Power on the phone.
2. Enable 'USB debugging' in 'Settings'-'Developer options',
tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press 'Reboot to...' button and select mode to reboot (download or recovery).

Operation: Patch Certificate
Selected model: SM-A600F
Software version: 41.0

Waiting ADB device... OK
Reading phone info...
Model: SM-A600F
Android version: 9
PDA version: A600FJXS5BSL1
CSC version: A600FOJM5BSL1
Phone version: A600FJXS5BSL1
Product code: SM-A600FZDHEGY
CSC country code: Egypt
CSC sales code: EGY
Phone SN: RF8K519HEJN
IMEI: 353345789654334
HW version: REV0.0
RF cal date: 20180512
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2019-12-01
Boot Warranty bit: 1
SIM State: ABSENT,ABSENT
Checking Super user right... true
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... OK
Searching server...
Exception: Access violation at address 0040CD0A in module 'SamsungToolPRO.exe'. Read of address 4C08F99E
Done with Samsung Tool PRO v.41.0

Had the same problem, fixed by disabling antivirus.