Samsung G530h 4.4.4 root & unlock done by z3x box.
Here is method to unlock the phone:
3.5130 usb cable
Turn on “USB Debugging” in settings
Go to dial window
Enter “*#0808#” number
Click Wipe EFS
Click Write Cert
Click write Qcn
write cert file:
cert – Download
All Done Now your phone is unlock.