First root the phone then direct unlock.
Code:
Operation: Unlock
Selected model: SM-A320FL
Software version: 37.0
Waiting ADB device... OK
Reading phone info...
Model: SM-A320FL
Android version: 8.0.0
PDA version: A320FLXXU3CRH2
CSC version: A320FLATO3CRH2
Phone version: A320FLXXU3CRH2
Product code: SM2A320FZBNATO
CSC country code: Austria
CSC sales code: ATO
Phone SN: RF8J739FWHY
IMEI: 359751085387863
HW version: MP 0.300
RF cal date: 20170801
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2018-08-01
Boot Warranty bit: 1
SIM State: ABSENT
Checking Super user right... true
Reading NV data... OK
Checking NV data... OK
Reading data... OK
Detecting MODEM... OK
Reading MODEM... OK
Calculating... OK
Initialization data... OK
Rebooting phone... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Writing zTool... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data... OK
HWID: 34 05 00 00 00 00 00 00 00 00 00 00 30 7E 5F 8F
Calculating... OK
Unlocking... OK
Writing NV data... OK
Rebooting phone... OK
Unlock done
Done with Samsung Tool PRO v.37.0
