Many Samsung Tizen and LG WebOS TVs can run IPTV apps natively. That means fewer remotes and full use of your TV’s 4K panel.
Samsung
Install a Smart TV IPTV player from the Samsung app store, then enter FireStreams credentials.
LG
Install IPTV Smarters (or similar) from the LG Content Store and sign in.
Network tip: Prefer Ethernet for 4K live sports.