same problem!
UNLOCK INSTRUCTIONS:
To unlock:
Phone must be rooted!
If the software can't root the phone automatically,
then you must root your device manually.
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press 'Unlock' for direct unlock.
To read security codes using sever:
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press 'Read Codes via server' button, select 'Read codes ...' algo,
write your login and password in window if it will appear.
(Login and password will be saved as default after first input and can be changed in settings.)
Operation: Read Codes via Server [UPLOAD 2021]
Selected model: SM-J530F
Software version: 43.27
Checking Login and Password... OK
Balance: 22 crd.
You have 22 credit(s) left. This operation takes 5 credits. Attention! In case if phone asking MCK code, using this method will consume credits twice - first for MCK code and then for NCK. Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J530F
Android version: 9
PDA version: J530FXXS8CUE4
CSC version: J530FVFG8CTK1
Phone version: J530FXXS8CUE1
Product code: SM2J530FZKACNX
CSC country code: Romania
CSC sales code: CNX
Phone SN: RF8K33FDT7Y
IMEI: 354053097014311
HW version: MP 0.500
RF cal date: 20180327
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2021-05-01
Boot Warranty bit: 0
SIM State: ABSENT
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading lock state... OK
Your phone is requesting a MCK(Freeze) code. What code do you want to calculate? MCK(Freeze)
Executing... OK
Searching Ramdump interface... not found
Done with Samsung Tool PRO v.43.27 [SM-J530F,Read Codes via Server [UPLOAD 2021]]
