Software for this board is typically provided by manufacturers or specialized technician communities. Because it is a "universal" board, the firmware must match your specific panel's resolution (e.g., 1366x768 or 1920x1080).
: For many universal boards like the VS.T53U series, you can change the resolution via the remote without reflashing: vst53u112+software+free
If you have access to another computer where the VST53U112 already works, you can "pull" the free software from it. Software for this board is typically provided by