Ok so still bad news. Georgius, can you post here some full functional m3u file please? I would like to test it. Because I have never seen different message than "No Signal".
Unfortunatelly I can't because IPTV networks are accessible from internet. Mostly they are internal provider networks. Correct M3U files (in syntax) you can find in MP TV configuration directory, but none of them will work, because you're not connected to internal network of provider.
IPTV part is for TV stream, but this stream must compliant DVB specification. It's same as for DVB-T, DVB-C or DVB-S. But mostly it works only in internal provider network (mainly because of big bandwidth).
So is any way how tu put m3u file to list of tv programs? Now i have special folder with this m3u files. If i choose etc. mtv.m3u, it runs external player (vlc) and plays it. It works well but I would like to have this programs all together with DVB-T programs. It would be fantastic.