LG G2 D802 - How to flash stock firmware

To restore LG G2 D802 mobile phone use LG Mobile Support Tool from UK LG Support page.

Set your LG G2 to Download mode >

• Your phone must be turned off before starting the steps from this guide.
• So, press power button and select “power off”.
• Then, press the Volume Up button on your LG G2.
• While you are holding the volume up button, plug in your phone’s USB cable.
• Keep pressing the Volume up button until the download mode is being displayed.

Then connect your mobile phone with USB cable and start LG Mobile Support Tool as Administrator, with right click on Application icon.

Choose option > Install USB Driver, to install LG drivers.

Select Options > Upgrade Recovery option and follow further instructions.

Application will download latest firmware for your LG G2 mobile phone and flash it.

After successful process, when phone bootup for the first time, break this operation with Power button to PowerOff the phone and start Factory Reset procedure.

• Press and hold the Volume Down button and the Power button. 
• When the LG logo is displayed release the Power button only then immediately press and hold the Power button again. 
• Release both buttons when the Factory data reset screen displays. 
• From the Factory data reset screen, select Yes.

After that, your phone will StartUp with fresh installed latest stock firmware...