Same Model, Same build number, Same problem
Operation: Unlock
Selected model: SM-A326U
Software version: 43.4
Checking Login and Password... OK
Balance: 27 crd.
You have 27 credit(s) left. This operation takes 10 credits. Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-A326U
Android version: 11
PDA version: A326USQU3AUE7
CSC version: A326UOYN3AUE7
Phone version: A326USQU3AUE7
Product code: SM-A326UZKNDSH
CSC country code: USA
CSC sales code: DSH
Carrier ID: DSH
Phone SN: RFCR606YA7P
IMEI: 35009xxxxxxxxxx69
HW version: REV1.0
RF cal date: 20210611
Chip name: MT6853
Modem board: MT6853
Security patch: 2021-05-01
Boot Warranty bit: 0
SIM State: NETWORK_LOCKED
Waiting for device to become ready... OK
Reading IMEI... OK
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Checking network lock status... LOCKED
Reading data from phone... error (1.0.0.5.3)
Reboot your phone and try again
Done with Samsung Tool PRO v.43.4