Hard Reset LG KG280

Check device it must be working.
Now open up dialer by pressing Call key or you can go to Standby screen.
Type in this code: 1809#*101# or 2945#*101# or 2945#*7101#
Then confirm whole process by pressing Call key.
Device should reboot, after that process will be done.

WARNING !
Hard Reset will erase all of your data
All described operations you are doing at your own risk.