The "RUUL" in the part number often denotes a specific die revision or temperature range, while "Z1" may indicate a packaged version with lead-free or specific bonding options.
The short answer: It is a highly specific, likely proprietary firmware image for a TSUMV53 series video controller chip from MStar (now part of MediaTek). tsumv53ruul-z1 firmware
The TSUMV53 chip itself runs firmware that controls: The "RUUL" in the part number often denotes
It appears to be either: