HOW TO READ CERT WITH EXYNOS UNLOCK AND DIAG PORT?
Answer
Start phone fully make sure stock firmware is in phone. in some case you may need combination MODEM only not full flash.


Dial *#0808# select LAST OPTION..(some case you may need to reboot)
Scan port and select "SAMSUNG Mobile USB Serial Port" in GCPro .
Go to samsung tab select Exynos unlock. Press start if ask for direct unlock press NO if you just wanted to read cert or code.

If you face any issue Please report by making thread and attach full log.