The terms and "upd" remain unclear. "MTR" is often an abbreviation for the Mass Transit Railway (like in Hong Kong), and "upd" stands for Update . However, no information connects these terms to the movies "Kunwara" or "Paying Guests."
Based on the title tone, the most likely answer is that is a straight-to-VCD adult comedy produced in Mumbai’s low-budget "C-circuit." In 2007, dozens of such films were released with titles like Ghar Jamai , Mera Pati Sirf Mera Hai , and 18 Kunwara (a clear pun on legal age). These films often ran under the radar, were never reviewed, and survive only on old VCDs traded in Pirana market (Mumbai) or Old Delhi.
I will use the available sources. For "Kunwara", I have the Wikipedia page. For "Paying Guests", I have search results. For Bhojpuri songs, I have the JioSaavn result.