Most controller boards have an On-Screen Display (OSD).
The "TVST" prefix indicates a design lineage from Taiwanese chipset manufacturers (T-series Video Scaler Technology). The number 59031 references a specific PCB revision that handles dual-channel LVDS signals—critical for driving 19-inch and 21.3-inch diagnostic panels. tvst59031+firmware+1280x1024+upd
The extension .UPD (or sometimes _upd.bin) is a proprietary update image used by several scaler chip families (Realtek, MStar, and Novatek). Unlike standard .BIN or .HEX files, a .UPD package contains: Most controller boards have an On-Screen Display (OSD)
Official sources are rare. Most TVST59031 boards are sold third-party. Try these avenues: Critical Warning: Do not use firmware from a
Critical Warning: Do not use firmware from a TVST59030 or TVST59032. Subtle pin differences exist. The firmware must explicitly list tvst59031 in its compatibility notes.