This tool really working well because i downloaded firmware using this tool and this tool by xdadevelopers if you want to download tested firmware just need to model number or phone serial number after click on save button and choose path where you want to save i use firmware which downloaded from using this tool and device working well but everyone know how to flash using firmware so please carefully flash device, this tool in benefit which original download if you have to original download then not risk after flash device will dead or other issue and in this blog many LG android device flash tutorial if you don't know how to flash LG android device you can search using this blog and if not put tutorial then you can do comment on below comment box then i will soon reply with best.
Download Link
LG Android Original Firmware Download Tool
here