Ok!Let's follow this tutorial,very easy!
- On your phone,be sure that you have enabled "USB debuging mode"(Seting>System>Developer options), and Unknown source(Seting>System>Security)
- Download and install LG USB DRIVER
- Download this file and unrar it,you'll have "RootOptimusG" folder
- Run "RootOptimusG.bat", chose "y" then hit "Enter"
- Look up to your phone screen,select "Restore my data"
- Have a coffee ultil it completed, check SuperSU icon on the phone screen!
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