This firmware is known to fix "Robot/System Damaged" errors on Chinese-manufactured 4K boards.
Once the update reaches 100%, the TV will usually reboot. Remove the USB drive immediately to prevent it from entering the update cycle again. Troubleshooting & Sources Download CV638H D50 3840x2160 Mitashi 55V20 part10 rar
To successfully extract the firmware, you must download all parts (Part 1 through Part 10). This firmware is known to fix "Robot/System Damaged"
Mitashi 55V20 (also found in some SANYO and Chinese generic models) Resolution: 3840x2160 (Ultra HD / 4K) Download CV638H D50 3840x2160 Mitashi 55V20 part10 rar
Firmware files for 4K Smart TVs are often large (exceeding 1GB). To make them easier to upload and download on technical forums, they are frequently split into multiple compressed segments.