[Q] LG Optimus G F180s topic

Hi All members...
Bought New Lg Optimus G F180S...
My younger Bro wants to root it...i dnt dnow what he exactly did with it..but something went wrong..n he messed up with it...
now phone is on "LG boot loop..Security Error"
NOw phone not detecting with pc...in any mode
well...white pressing "VOLUME UP + POWER" it shows Lg service mode
while VOL DOWN + POwer" phone asking to erase data n continue..
& finally In DOWNLOAD mode VOL UP + VOL DOWN with usb connected...phone not detecting with with in any mode...
Any idea for it....

[Q] lG Optimus G F180S!!! Help Needed for reverting back to stock rom topic

A few weeks ago, I installed freegee and unlocked bootloader, installed custom room and after installing I formated data and then backup of is also formated and I lost boot backup in freegee.

In short I want to go back to stock room, installing kdz file with lg kdz update tool (KDZ_FW_UPD) does not help it reboots the device again in fastboot mod which give me option to 1- start, 2- start recovery 3- reboot boot loader 4- power off and after some time kdz update tool gives me error.

I downloaded a full dump of working LGOG F180S but dont know how I can move this dump to my LGOG so that I can bring it back to stock I think there is no other way to do so.

Please Guys tell me How Can I install/restore this dump to my LGOG.