See here :
https://hdsatelit.blogspot.ro/2014/03/aplicatia-simple-smart-iptv-ss-iptv.html
1.Download SS IPTV from link (from original post)
2.Extract (using RAR).Result folder named "lgapps"
3.Insert USB in you computer and format FAT 32.
4.Copy "lgapps" in "root" of USB.
5.Insert USB in you LG TV.
Power on TV,go to USB and run (click OK on icon-single icon appear )