LG CU720 Unlock Done with LG Tool

Tools:

LG Tool ( SE Activated )

Procedure:

* Open LG Tools and request CODE by IMEI
* Insert non AT@T SIM
* Power up
* Showing 'Invalid Smart Chip'
* Enter *#865625#
* This will take you to a screen saying you are about to unlock your phone. Do you want to proceed.
* Select yes (left button)
* Enter your 16 digits code.
* Hit OK
* Enter your code again
* Hit OK.

It requires 2 inputs of the unlock code.
Screen shot:









Now the phone is unlocked