|LG Optimus L9 II||
1. Download and setup LG Driver.
2. Download LG Flash Tool 2014 tool and extract.
3. Enter to Download Mode (shutdown phone then VolumeUP + Power after vibration release the Power button) and plug USB into your PC.
Official signed firmwares update.
1. Connect your iPhone or iOS device to your computer.
2. Select the device in iTunes online or downloaded version of iTunes.