That's the file you’re asking about. Make all your edits and then reload in channels.
For me using a Synology, I copy the file to make my edits then replace back to the folder. Go to channels and reload m3u, then redownload guide.
ok, I was trying / instead of the usual \ in windows.. 
this was what I was supposed to do.

thanks for helping all us 10t's out here.
