This is the most cryptic part of the keyword. In IPTV modding communities, the term "Room" rarely refers to a physical location. Instead, it is slang for a geo-locked or subscription-locked category of content.
If you want the "unlock anything" feeling, the modern tech stack is Stremio (free app) + Torrentio addon + Real-Debrid service. jztv mod unlock room new
If you want the functionality of JZTV with unlocked rooms, but you don't want malware or legal trouble, stop searching for mods. Here is the safe path: This is the most cryptic part of the keyword