The latest stable version as of this writing is (check the official QMAX support portal for real-time updates).
"My QMAX MST-999 H2 Mini 4 would constantly freeze when scrolling through the EPG after a few minutes of use. I performed the from the official site (version 2.1.0). The interface is noticeably snappier, and the guide populates almost instantly. Plus, I’m now receiving a low-power PBS station I could never get before. Worth the 10 minutes." qmax mst-999 h2 mini 4 software update
Updates have refined the SNR (Signal-to-Noise Ratio) readings, making it easier for users to align their satellite dishes accurately. Network Apps: The latest stable version as of this writing