The firmware referenced is designed for high-performance 4K displays. Key hardware details include: CV638H-D50
If your TV is stuck on a logo (boot loop) or showing a "System Damaged" error, a USB recovery is the standard fix.
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.
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
Use a high-quality USB 2.0 drive formatted to FAT32 .
Place all .rar parts in the same folder. Right-click on Part 1 and select "Extract Here" using a tool like WinRAR or 7-Zip . This will automatically combine all segments into a single usable firmware file (usually an .img or .bin file). How to Install the Firmware via USB
This article provides technical guidance for downloading and installing the firmware for the Smart TV, specifically for units utilizing the CV638H-D50 mainboard. Hardware Specifications
Plug the TV back into the power outlet while continuing to hold the button.