There are four ways LG update:
- Using recovery (to update installed OS)
- Using LG Flash Tool (to recover LG)
- Using SP Flash Tool (to recover LG with MTK SOC)
If you want to install a LG update using recovery – download the official update, reboot your phone or tablet into recovery mode and click “Install update from SD card”.
To install LG update with LG Flash Tool – download and install drivers and LG Flash Tool app, download official KDZ firmware and flash it by instruction.