LG G3 S D

Hi,



Customer bring phone which is SIMlocked, he bought unlcok codes, but make mistake and 10 times put PIN number as Unlock code, now Can not put unlock NCK code, and others are blocked,

How to unlock this phone?
What is method of reset counter of simlock try code?
Any code or want by computer, which soft?

kindly any to be helped,

Thank you