Services like U+ tvG or KT Olleh tv require a Korean phone number. However, non-residents can use a VPN with services like TVing (free tier available, limited content).
A reliable "boja" source will clearly show "Last updated: Today" or have a changelog. Avoid any site that looks abandoned. boja+live+tv+korea+upd+free
Once you find a website, look for embedded video players. Right-click and select "Inspect" or use browser extensions like "Video DownloadHelper" to extract the raw .m3u8 stream URL. You can then paste that into VLC Media Player (Network Stream) for a buffer-free experience. Services like U+ tvG or KT Olleh tv