If you don’t want to flash any firmware yet just press the power key for 10 seconds and the phone will turn on. Click on Properties > Port Settings > Advance > Change COM Port Number to COM41. Go to device manager and find LGE Mobile USB Serial Port (COMxx) (where xx is the port number). Hold down volume_up key then connect USB cable.Place TOT file to folder that you created. Place the file you downloaded to created folder. Download DLL file, D820 North America Version.Create a folder where to put the DLL and the Firmware file.Download and install LG flashtool, here.Download and install the LG drivers, here.If you are doing this for the first time you have to make some preparations. Below there is a tutorial which tells you how to restore your device version.Īlso Read: Best Custom ROMs for LG G3 (Fast & Stable)Ĭarefully follow the steps below and learn how to flash stock factory images on your LG device. It will backup the device factory version to /sdcard/version.txt. If you want to have the original device factory version, download the tool here. If you flash a firmware that has a different factory version, then even the device factory version changes. It changes the factory version of the device.

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